cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Characterizing Interface Topology in Multiphase Flows using Skeletons
Creators: name: Chen, Xianyang
name: Lu, Jiacai
name: Zaleski, Stéphane
name: Tryggvason, Grétar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The unsteady motion of a gas-liquid interface, such as during splashing or atomization, often results in complex liquid structures embedded in the ambient fluid. Here we explore the use of skeletonization to identify the minimum amount of information needed to describe their geometry. We skeletonize a periodic liquid jet by a modification of a recently introduced approach to coarsen multiphase flows while retaining a sharp interface. The process consists of diffusing an index function and at the same time moving the interfaces with it, until they "collapse" into each other and form skeletons. The skeleton represents the basic topology of the jet and we also keep track of how much the interface is moved (or how much volume is "accumulated") during the process, which can be used to approximately reconstruct the jet. We explore various quantitative measures to characterize and distinguish the skeletons. Those include standard morphometrics such as branch length distribution, after segmenting the skeletons into branches, and a more sophisticated representation of the skeleton structures called Topology Morphology Descriptor (TMD), to obtain an "equivalent" description of the skeletons by retaining information about the topology in a compact way.
Inclusive Psi(2S) production in p-Pb collisions with ALICE
Creators: name: Arnaldi, Roberta
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The ALICE Collaboration has studied the inclusive $ψ(\rm 2S)$ production in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV at the CERN LHC. Measurements are performed, in the $μ^{+}μ^{-}$ decay channel, in a forward (2.03$
description: 4 pages, 6 figures, Proceedings of the "Quark Matter 2014 Conference", XXIV International Conference on Ultrarelativistic Nucleus-Nucleus Collisions, Darmstadt, May 19-24 2014
Patched patterns and emergence of chaotic interfaces in arrays of nonlocally coupled excitable systems
Creators: name: Franović, Igor
name: Eydam, Sebastian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We disclose a new class of patterns, called patched patterns, in arrays of non-locally coupled excitable units with attractive and repulsive interactions. Self-organization process involves formation of two types of patches, majority and minority ones, characterized by uniform average spiking frequencies. Patched patterns may be temporally periodic, quasiperiodic or chaotic, whereby chaotic patterns may further develop interfaces comprised of units with average frequencies in between those of majority and minority patches. Using chaos and bifurcation theory, we demonstrate that chaos typically emerges via a torus breakup and identify the secondary bifurcation that gives rise to chaotic interfaces. It is shown that the maximal Lyapunov exponent of chaotic patched patterns does not decay, but rather converges to a finite value with system size. Patched patterns with a smaller wavenumber may exhibit diffusive motion of chaotic interfaces, similar to that of the incoherent part of chimeras.
description: 9 pages, 9 figures
An item response analysis of the pediatric PROMIS anxiety and depressive symptoms scales
Creators: name: Irwin, Debra E.
name: DeWalt, Darren A.
name: DeWitt, Esi Morgan
name: Langer, Michelle M.
name: Thissen, David
name: Varni, James W.
name: Lai, Jin-Shei
name: Yeatts, Karin
name: Stucky, Brian
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: The Patient-Reported Outcomes Measurement Information System (PROMIS) aims to develop self-reported item banks for clinical research. The PROMIS pediatrics (aged 8–17) project focuses on the development of item banks across several health domains (physical function, pain, fatigue, emotional distress, social role relationships, and asthma symptoms). The psychometric properties of the anxiety and depressive symptom item banks are described.
title: An Experimental Study of a Type of Vortex Sink Rate Sensors
Creators: name: Arimilli, Rao V.
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1969

description: In order to study the flow field in the sink region of a vortex Sink Rate Sensor, an experimental study was initiated .. Using two probes, one for the total pressure measurements and the other for the static pressure measurements, data was collected for two flow rates, various rates of rotation and at various points in the sink region of the flow. For the sensor (coupler inside diameter 5.0 inches and height 0.50 inches) with slenderness parameter of unity, four important conclusions were drawn from the data. At a given location in the flow field the magnitude of the tangential component of velocity increased for decreased flow rates. Viscous core did exist in the sink flow and outside of it the tangential component of velocity was negligibly small Within the viscous core the tangential component of velocity increased in a general manner with increased rates of rotation. The maximum of the tangential component of velocity occurred within the entrance region to the sink tube.
Exploration of 3D wavelet scattering transform coefficients for line-intensity mapping measurements
Creators: name: Chung, Dongwoo T
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The wavelet scattering transform (WST) has recently gained attention in the context of large-scale structure studies, being a possible generator of summary statistics encapsulating non-Gaussianities beyond the reach of the conventional power spectrum. This work examines the three-dimensional solid harmonic WST in the context of a three-dimensional line-intensity mapping measurement to be undertaken by current and proposed phases of the CO Mapping Array Project (COMAP). The WST coefficients demonstrate interpretable behaviour in the context of noiseless CO line-intensity simulations. The contribution of the cosmological $z\sim3$ signal to these coefficients is also detectable in principle even in the Pathfinder phase of COMAP. Using the peak-patch method to generate large numbers of simulations and incorporating observational noise, we numerically estimate covariance matrices and show that careful choices of WST hyperparameters and rescaled or reduced coefficient sets are both necessary to keep covariances well-conditioned. Fisher forecasts show that even a reduced `shapeless' set of $\ell$-averaged WST coefficients show constraining power that can exceed that of the power spectrum alone even with similar detection significance. The full WST could improve parameter constraints even over the combination of the power spectrum and the voxel intensity distribution, showing that it uniquely encapsulates shape information about the line-intensity field. However, practical applications urgently require further understanding of the WST in key contexts like covariances and cross-correlations.
description: 15 pages; 6 figures, 5 tables; v2 reflects the version accepted for publication in MNRAS
Measuring social health in the patient-reported outcomes measurement information system (PROMIS): item bank development and testing
Creators: name: Castel, Liana D.
name: Garcia, Sofia F.
name: Heinemann, Allen W.
name: Cella, David
name: Rothrock, Nan
name: Bode, Rita K.
name: Bosworth, Hayden B.
name: Hahn, Elizabeth A.
name: Eisen, Susan V.
name: DeVellis, Robert F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: To develop a social health measurement framework, to test items in diverse populations and to develop item response theory (IRT) item banks.
An Asymmetric Contrastive Loss for Handling Imbalanced Datasets
Creators: name: Vito, Valentino
name: Stefanus, Lim Yohanes
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Theory (cs.IT)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Contrastive learning is a representation learning method performed by contrasting a sample to other similar samples so that they are brought closely together, forming clusters in the feature space. The learning process is typically conducted using a two-stage training architecture, and it utilizes the contrastive loss (CL) for its feature learning. Contrastive learning has been shown to be quite successful in handling imbalanced datasets, in which some classes are overrepresented while some others are underrepresented. However, previous studies have not specifically modified CL for imbalanced datasets. In this work, we introduce an asymmetric version of CL, referred to as ACL, in order to directly address the problem of class imbalance. In addition, we propose the asymmetric focal contrastive loss (AFCL) as a further generalization of both ACL and focal contrastive loss (FCL). Results on the FMNIST and ISIC 2018 imbalanced datasets show that AFCL is capable of outperforming CL and FCL in terms of both weighted and unweighted classification accuracies. In the appendix, we provide a full axiomatic treatment on entropy, along with complete proofs.
description: 15 pages, 5 figures
Sampling plan and patient characteristics of the PROMIS pediatrics large-scale survey
Creators: name: DeWalt, Darren A.
name: Irwin, Debra E.
name: Varni, James W.
name: DeWitt, Esi Morgan
name: Thissen, David
name: Yeatts, Karin
name: Stucky, Brian D.
name: Lai, Jin Shei
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: This paper describes a large-scale administration of the Patient-Reported Outcomes Measurement Information System (PROMIS) pediatric items to evaluate measurement characteristics.
Assessing longitudinal quality of life in prostate cancer patients and their spouses: a multilevel modeling approach
Creators: name: Cimprich, Bernadine
name: Song, Lixin
name: Mood, Darlene W.
name: Ronis, David L.
name: Northouse, Laurel L.
name: Braun, Thomas M.
name: Zhang, Lingling
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: This study aimed at examining the relationship between quality of life (QOL) in prostate cancer (PCa) patients and partners and how baseline demographics, cancer-related factors, and time-varying psychosocial and symptom covariates affect their QOL over time.
Non-metricity signatures on the Higgs boson signal strengths at the LHC
Creators: name: Ilisie, Victor
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we study the high-energy Higgs boson phenomenology associated to the non-metricity scale $Λ_Q$ at the LHC. Non-metricity is present in more generic non-Riemannian geometries describing gravity beyond General Relativity and exhibits nice features in astronomy and cosmology, and it can be analysed perturbatively. Using effective field theory tools, we calculate the new physics contributions to the one-loop $H\toγγ$ and $gg\to H$ processes and, together with previous bounds from Compton scattering, we obtain relevant constraints and correlations in the model's parameter space. This can help us take a step further, and no longer associate gravitational effects uniquely to astronomical phenomena, and to start analysing these effects by means of high energy experiments. In turn, this could also help us get a better grasp at quantum phenomena associated to gravity.
description: 26 pages, 9 figures. Minor changes made, clarifying comments added, phenomenology section enlarged (with one additional case) and references updated. Matches version to be published in JHEP
Electron thermal conduction as a possible mechanism to make the inner heliosheath thnner
Creators: name: Izmodenov, V. V.
name: Alexashov, D. B.
name: Ruderman, M. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We show that the electron thermal conductivity may strongly affect the heliosheath plasma flow and the global pattern of the solar wind (SW) interaction with the local interstellar medium (LISM). In particular, it leads to strong reduction of the inner heliosheath thickness that makes possible to explain (qualitatively) why Voyager 1 (V1) has crossed the heliopause at unexpectedly small heliocentric distance of 122 AU. To estimate the effect of thermal conductivity we consider a limiting case when thermal conduction is very effective. To do that we assume the plasma flow in the entire heliosphere is nearly isothermal. Due to this effect, the heliospheric distance of the termination shock has increased by about 15 AU in V1 direction compared to the adiabatic case with gamma = 5/3. The heliospheric distance of the heliopause has decreased by about 27 AU. As a result, the thickness of the inner heliosheath in the model has decreased by about 42 AU and become equal to 32 AU.
description: 7 pages, 2 figures, accepted for publication in Astrophys. Journal Letters
Cooling Envelope Model for Tidal Disruption Events
Creators: name: Metzger, Brian D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a toy model for the thermal optical/UV/X-ray emission from tidal disruption events (TDE). Motivated by recent hydrodynamical simulations, we assume the debris streams promptly and rapidly circularize (on the orbital period of the most tightly bound debris), generating a hot quasi-spherical pressure-supported envelope of radius R_v ~ 1e14 cm (photosphere radius ~1e15 cm) surrounding the supermassive black hole (SMBH). As the envelope cools radiatively, it undergoes Kelvin-Helmholtz contraction R_v ~ t^(-1), its temperature rising T_eff ~ t^(1/2) while its total luminosity remains roughly constant; the optical luminosity decays as nu L_nu ~ R_v^2 T_eff ~ t^(-3/2). Despite this similarity to the mass fall-back rate Mdot_fb ~ t^(-5/3), envelope heating from fall-back accretion is sub-dominant compared to the envelope cooling luminosity except near optical peak (where they are comparable). Envelope contraction can be delayed by energy injection from accretion from the inner envelope onto the SMBH in a regulated manner, leading to a late-time flattening of the optical/X-ray light curves, similar to those observed in some TDEs. Eventually, as the envelope contracts to near the circularization radius, the SMBH accretion rate rises to its maximum, in tandem with the decreasing optical luminosity. This cooling-induced (rather than circularization-induced) delay of up to several hundred days, may account for the delayed onset of thermal X-rays, late-time radio flares, and high-energy neutrino generation, observed in some TDEs. We compare the model predictions to recent TDE light curve correlation studies, finding agreement as well as points of tension.
description: 12 pages, 4 figures
Gusts in the Headwind: Uncertainties in Direct Dark Matter Detection
Creators: name: Lawrence, Grace E.
name: Duffy, Alan R.
name: Blake, Chris A.
name: Hopkins, Philip F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use high-resolution, hydrodynamic, galaxy simulations from the Latte suite of FIRE-2 simulations to investigate the inherent variation of dark matter in sub-sampled regions around the Solar Circle of a Milky Way-type analogue galaxy and its impact on direct dark matter detection. These simulations show that the baryonic backreaction, as well as the assembly history of substructures, has lasting impacts on the dark matter's spatial and velocity distributions. These are experienced as 'gusts' of dark matter wind around the Solar Circle, potentially complicating interpretations of direct detection experiments on Earth. We find that the velocity distribution function in the galactocentric frame shows strong deviations from the Maxwell Boltzmann form typically assumed in the fiducial Standard Halo Model, indicating the presence of high-velocity substructures. By introducing a new numerical integration technique which removes any dependencies on the Standard Halo Model, we generate event-rate predictions for both single-element Germanium and compound Sodium Iodide detectors, and explore how the variability of dark matter around the Solar Circle influences annual modulation signal predictions. We find that these velocity substructures contribute additional astrophysical uncertainty to the interpretation of event rates, although their impact on summary statistics such as the peak day of annual modulation is generally low.
description: 22 pages, 27 figures, 4 tables. Submitted to MNRAS. Comments welcome
Using the PedsQL™ 3.0 asthma module to obtain scores comparable with those of the PROMIS pediatric asthma impact scale (PAIS)
Creators: name: Varni, James W.
name: Irwin, Debra E.
name: DeWalt, Darren A.
name: Liu, Yang
name: Thissen, David
name: Stucky, Brian D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: The National Institutes of Health's Patient-Reported Outcomes Measurement Information System (PROMIS) has developed several scales measuring symptoms and function for use by the clinical research community. One advantage of PROMIS is the ability to link other scales to the PROMIS metric.
Squirmer locomotion in a yield stress fluid
Creators: name: Eastham, Patrick S.
name: Mohammadigoushki, Hadi
name: Shoele, Kourosh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: An axisymmetric squirmer in a Bingham viscoplastic fluid is studied numerically to determine the effect of a yield stress environment on locomotion. The nonlinearity of the governing equations necessitates numerical methods, which is accomplished by solving a variable-viscosity Stokes equation with a Finite Element approach. The effects of stroke modes, both pure and combined, are investigated and it is found that for the treadmill or "neutral" mode, the swimmer in a yield stress fluid has a lower swimming velocity and uses more power. However, the efficiency of swimming reaches its maximum at a finite yield limit. In addition, for higher yield limits, higher stroke modes can increase the swimming velocity and hydrodynamic efficiency of the treadmill swimmer. The higher-order odd-numbered squirming modes, particularly the third stroke mode, can generate propulsion by themselves that increases in strength as the viscoplastic nonlinearity increases till a specific limit. These results are closely correlated with the confinement effects induced by the viscoplastic rigid surface surrounding the swimming body, showing that swimmers in viscoplastic environments, both biological and artificial, could potentially employ other non-standard swimming strategies to optimize their locomotion.
PROMIS Pediatric Anger Scale: an item response theory analysis
Creators: name: Yeatts, Karin B.
name: DeWitt, Esi Morgan
name: Lai, Jin-Shei
name: Irwin, Debra E.
name: Varni, James W.
name: DeWalt, Darren A.
name: Stucky, Brian D.
name: Langer, Michelle M.
name: Thissen, David
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: The Patient Reported Outcomes Measurement Information System (PROMIS) aims to develop patient-reported outcome (PROs) instruments for use in clinical research. The PROMIS pediatrics (ages 8–17) project focuses on the development of PROs across several health domains (physical function, pain, fatigue, emotional distress, social role relationships, and asthma symptoms). The objective of the present study is to report on the psychometric properties of the PROMIS Pediatric Anger Scale.
Two-step hyperentanglement purification with the quantum-state-joining method
Creators: name: Ren, Bao-Cang
name: Du, Fang-Fang
name: Deng, Fu-Guo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hyperentanglement is a promising resource in quantum information processing, especially for increasing the channel capacity of long-distance quantum communication. Hyperentanglement purification is an important method to obtain high-fidelity nonlocal hyperentangled states from mixed hyperentangled states in a long-distance quantum communication process with noisy channels. Here, we present a two-step hyperentanglement purification protocol for nonlocal mixed hyperentangled states with polarization bit-flip errors and spatial-mode phase-flip errors, resorting to polarization-spatial phase-check quantum nondemolition detectors and the quantum-state-joining method (QSJM). With QSJM, the protocol can preserve the states that are discarded in the previous hyperentanglement purification protocols. It has the advantage of a high efficiency, and it is useful for improving the entanglement of photon systems with several degrees of freedom in long-distance high-capacity quantum communication.
description: 16 pages, 8 figures
title: Book review : McColgan, M and McMullin, C. (2017). Doing Relationship-based Social Work, A Practical Guide to Building Relationships and Enabling Change. Jessica Kingsley Publishers, ISBN 9781785920141
Creators: name: Paul, Jimmy
Publisher: name: Strathprints - University of Strathclyde
Year: 2017

description: When I was asked to write this book review, I was both excited and intrigued. As a care experienced adult who had many social workers through a turbulent experience of care, I hoped that I would learn a lot about what good social work practice should look like. Also, as a Consultant working on the Permanence and Care Excellence (PACE) programme, I also hoped that it would also benefit me professionally.
title: Mossbauer Study of Gadolinium Iron Garnet
Creators: name: Li, Jun
Publisher: name: Old Dominion University Libraries
Year: 1985

description: The Mossbauer spectroscopic study of Gadolinium Iron Garnet R3Fe5O12 (GdIG) has been performed over the temperature range of 7K to 715K. Both high temperature and low temperature properties of GdIG have been studied. The magnetization is along (111) direction over this temperature range. The internal magnetic fields at Fe57 sites in GdIG gave two values for the octahedral(a), site which differ by 4-6 KOe and one value for the tetrahedral (d), site at each temperature. Measurements of the total isomer shift in the spectra show that the shift of the center of the spectra consists of two contributions, chemical shift and thermal shift. It is the thermal shift that causes the isomer shift to change as a function of temperature. No temperature-dependence is observed in the chemical shift. The Curie temperature (where the material changes its magnetic properties from ferrimagnetism to paramagnetism) is determined to be 562 ±o.5K. The temperature-independent quadrupole splittings in GdIG at both sites have been obtained from the spectra above the Curie temperature. They are 0.345 mm/s for the a-site and 0.920 mm/s for the d-site. No magnetic reorientation was observed within the temperature range at which the material has been studied.
A New Necessary and Sufficient Condition for the Existence of Global Solutions to Semilinear Parabolic Equations on Bounded Domains
Creators: name: Chung, Soon-Yeong
name: Hwang, Jaeho
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35F31, 35K91, 35K57

description: The purpose of this paper is to give a necessary and sufficient condition for the existence and non-existence of global solutions of the following semilinear parabolic equations \[ u_{t}=Δu+ψ(t)f(u),\,\,\mbox{ in }Ω\times (0,t^{*}), \] under the Dirichlet boundary condition on a bounded domain. In fact, this has remained as an open problem for a few decades, even for the case $f(u)=u^{p}$. As a matter of fact, we prove: \[ \begin{aligned} &\mbox{there is no global solution for any initial data if and only if } &\mbox{the function } f \mbox{ satisfies} &\hspace{20mm}\int_{0}^{\infty}ψ(t)\frac{f\left(\lVert S(t)u_{0}\rVert_{\infty}\right)}{\lVert S(t)u_{0}\rVert_{\infty}}dt=\infty &\mbox{for every }\,ε>0\,\mbox{ and nonnegative nontrivial initial data }\,u_{0}\in C_{0}(Ω). \end{aligned} \] Here, $(S(t))_{t\geq 0}$ is the heat semigroup with the Dirichlet boundary condition.
description: 12 pages
PROMIS® Parent Proxy Report Scales: an item response theory analysis of the parent proxy report item banks
Creators: name: Varni, James W.
name: Amtmann, Dagmar
name: DeWitt, Esi Morgan
name: Thissen, David
name: Liu, Yang
name: Irwin, Debra E.
name: Lai, Jin-Shei
name: Gorder, Hally
name: DeWalt, Darren A.
name: Stucky, Brian D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: The objective of the present study is to describe the item response theory (IRT) analysis of the National Institutes of Health (NIH) Patient Reported Out-comes Measurement Information System (PROMIS®) pediatric parent proxy-report item banks and the measurement properties of the new PROMIS® Parent Proxy Report Scales for ages 8–17 years.
Turbulent Dust-trapping Rings as Efficient Sites for Planetesimal Formation
Creators: name: Xu, Ziyan
name: Bai, Xue-Ning
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent observations of protoplanetary disks (PPDs) in the sub-mm have revealed the ubiquity of annular substructures, indicative of pebble-sized dust particles trapped in turbulent ring-like gas pressure bumps. This major paradigm shift also challenges the leading theory of planetesimal formation from such pebbles by the streaming instability, which operates in a pressure gradient and can be suppressed by turbulence. Here we conduct three-dimensional local shearing-box, non-ideal magnetohydrodynamic (MHD) simulations of dust trapping in enforced gas pressure bumps including dust backreaction. Under the moderate level of turbulence generated by the magnetorotational instability (MRI) with ambipolar diffusion that is suitable for outer disk conditions, we achieve quasi-steady states of dust trapping balanced by turbulent diffusion. We find strong dust clumping in all simulations near the gas pressure maxima, reaching a maximum density well above the threshold of triggering gravitational collapse to form planetesimals. A strong pressure bump concentrates dust particles towards bump center. With a weak pressure bump, dust can also concentrate in secondary filaments off the bump center due to dust backreaction, but strong clumping still occurs mainly in the primary ring around the bump center. Our results reveal dust-trapping rings as robust locations for planetesimal formation in outer PPDs, while they may possess diverse observational properties.
description: 13 pages, 4 figures, plus appendix (4 pages, 4 figures). Accepted for publication in ApJ Letter
Local moment formation in bilayer graphene
Creators: name: Mohammadi, Yawar
name: Moradian, Rostam
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The local properties of bilayer graphene (BLG) due to the spatial inhomogeneity of its sublattices are of interest. We apply Anderson impurity model to consider the local moment formation on a magnetic impurity which could be adsorbed on different sublattices of BLG. We find different features for the impurity magnetization when it is adsorbed A and B sublattices. The impurity adsorbed on A sublattice can magnetize even when the impurity level is above the Fermi level and the on-site coulomb energy is very small. But when the impurity is adsorbed on B sublattice the magnetization is possible for limited values of the impurity level and the on-site coulomb energy. This is due to different local density of the low energy states at A and B sublattices which originates from their spatial inhomogeneity. Also we show that electrical controlling the magnetization of adatoms besides it's inhomogeneity in BLG allow for possibility of using BLG in spintronic devices with higher potential than graphene.
description: 16 pages, 4 figures, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), Strongly Correlated Electrons (cond-mat.str-el)
Glaube in der Erlebnisgesellschaft
Creators: name: Junker-Kenny, Maureen
name: Tomka, Miklós
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 35 Nr. 4 (1999): Concilium: Internationale Zeitschrift für Theologie, Band 35, Heft 4
't Hooft expansion of $SO(N)$ and $Sp(N)$ $\mathcal{N}=4$ SYM revisited
Creators: name: Okuyama, Kazumi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the 't Hooft expansion of $d=4$ $\mathcal{N}=4$ supersymmetric Yang-Mills (SYM) theory with the gauge group $SO(N)$ or $Sp(N)$. We consider the $1/N_5$ expansion with fixed $g_sN_5$, where $g_s$ denotes the string coupling of bulk type IIB string theory on $AdS_5\times\mathbb{RP}^5$ and $N_5$ refers to the RR 5-form flux through $\mathbb{RP}^5$. $N_5$ differs from $N$ due to a shift coming from the RR charge of O3-plane. As an example, we consider the $1/N_5$ expansion of the free energy of $\mathcal{N}=4$ SYM on $S^4$ and the $1/2$ BPS circular Wilson loops in the fundamental representation of $SO(N)$ or $Sp(N)$. We find that the $1/N_5$ expansion is more "closed string like" than the ordinary $1/N$ expansion.
description: 11 pages. v2: references added
Collapsing spherical stars in f(R) gravity
Creators: name: Goswami, Rituparno
name: Nzioki, Anne Marie
name: Maharaj, Sunil. D.
name: Ghosh, Sushant G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We perform a careful investigation of the problem of physically realistic gravitational collapse of massive stars in f(R)-gravity. We show that the extra matching conditions that arise in the modified gravity imposes strong constraints on the stellar structure and thermodynamic properties. In our opinion these constraints are unphysical. We prove that no homogeneous stars with non-constant Ricci scalar can be matched smoothly with a static exterior for any nonlinear function f(R). Therefore, these extra constraints make classes of physically realistic collapse scenarios in general relativity, non-admissible in these theories. We also find an exact solution for an inhomogeneous collapsing star in the Starobinski model that obeys all the energy and matching conditions. However, we argue that such solutions are fine-tuned and unstable to matter perturbations. Possible consequences on black hole physics and the cosmic censorship conjecture are also discussed.
description: 11 pages, 8 figures, Revtex 4, Minor changes in text, Matches the accepted version in Physical Review D
Psychometric properties of instruments to measure the quality of end-of-life care and dying for long-term care residents with dementia
Creators: name: Achterberg, Wilco P.
name: Bezemer, Mirjam
name: de Vet, Henrica C. W.
name: Ribbe, Miel W.
name: Klapwijk, Maartje. S.
name: van der Steen, Jenny T.
name: Cohen, Lauren W.
name: Zimmerman, Sheryl
name: van Soest-Poortvliet, Mirjam C.
name: Knol, Dirk L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: PurposeQuality of care for long-term care (LTC) residents with dementia at the end-of-life is often evaluated using standardized instruments that were not developed for or thoroughly tested in this population. Given the importance of using appropriate instruments to evaluate the quality of care (QOC) and quality of dying (QOD) in LTC, we compared the validity and reliability of ten available instruments commonly used for these purposes.MethodsWe performed prospective observations and retrospective interviews and surveys of family (n=70) and professionals (n=103) of LTC decedents with dementia in the Netherlands.ResultsInstruments within the constructs QOC and QOD were highly correlated, and showed moderate to high correlation with overall assessments of QOC and QOD. Prospective and retrospective ratings using the same instruments differed little. Concordance between family and professional scores was low. Cronbach’s alpha was mostly adequate. The EOLD–CAD showed good fit with pre-assumed factor structures. The EOLD–SWC and FPCS appear most valid and reliable for measuring QOC, and the EOLD–CAD and MSSE for measuring QOD. The POS performed worst in this population.ConclusionsOur comparative study of psychometric properties of instruments allows for informed selection of QOC and QOD measures for LTC residents with dementia.
Adsorption at Liquid Interfaces Induces Amyloid Fibril Bending and Ring Formation
Creators: name: Jordens, Sophia
name: Riley, Emily E.
name: Usov, Ivan
name: Isa, Lucio
name: Olmsted, Peter D.
name: Mezzenga, Raffaele
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Protein fibril accumulation at interfaces is an important step in many physiological processes and neurodegenerative diseases as well as in designing materials. Here we show, using $β$-lactoglobulin fibrils as a model, that semiflexible fibrils exposed to a surface do not possess the Gaussian distribution of curvatures characteristic for wormlike chains, but instead exhibit a spontaneous curvature, which can even lead to ring-like conformations. The long-lived presence of such rings is confirmed by atomic force microscopy, cryogenic scanning electron microscopy and passive probe particle tracking at air- and oil-water interfaces. We reason that this spontaneous curvature is governed by structural characteristics on the molecular level and is to be expected when a chiral and polar fibril is placed in an inhomogeneous environment such as an interface. By testing $β$-lactoglobulin fibrils with varying average thicknesses, we conclude that fibril thickness plays a determining role in the propensity to form rings.
description: 31 pages, includes main text and supplementary information. Accepted for publication in ACS Nano; replaced to fix small typos in equation number cross referencing
Is the Nicolai map unique?
Creators: name: Lechtenfeld, Olaf
name: Rupprecht, Maximilian
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Nicolai map is a field transformation that relates supersymmetric theories at finite couplings $g$ with the free theory at $g=0$. It is obtained via an ordered exponential of the coupling flow operator integrated from $0$ to $g$. Allowing multiple couplings, we find that the map in general depends on the chosen integration contour in coupling space. This induces a large functional freedom in the construction of the Nicolai map, which cancels in all correlator computations. Under a certain condition on the coupling flow operator the ambiguity disappears, and the power-series expansion for the map collapses to a linear function in the coupling. A special role is played by topological (theta) couplings, which do not affect perturbative correlation functions but also alter the Nicolai map. We demonstate that for certain 'magical' theta values the uniqueness condition holds, providing an exact map polynomial in the fields and independent of the integration contour. This feature is related to critical points of the Nicolai map and the existence of 'instantons'. As a toy model, we work with $\mathcal{N}=1$ supersymmetric quantum mechanics. For a cubic superpotential and a theta term, we explicitly compute the one-, two- and three-point correlation function to one-loop order employing a graphical representation of the (inverse) Nicolai map in terms of tree diagrams, confirming the cancellation of theta dependence. Comparison of Nicolai and conventional Feynman perturbation theory nontrivially yields complete agreement, but only after adding all (1PI and 1PR) contributions.
description: 1+18 pages + appendices; v2: some clarifications, matches published version
Deriving clinically meaningful cut-scores for fatigue in a cohort of breast cancer survivors: a Health, Eating, Activity, and Lifestyle (HEAL) Study
Creators: name: Reeve, Bryce B.
name: Baumgartner, Kathy B.
name: Mitchell, Sandra A.
name: Ballard-Barbash, Rachel
name: Stover, Angela M.
name: Piper, Barbara F.
name: McTiernan, Anne
name: Smith, Ashley Wilder
name: Bernstein, Leslie
name: Alfano, Catherine M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: PURPOSE: To empirically determine clinically meaningful cut-scores on the 0-10 response scale of the revised Piper Fatigue Scale (PFS-R) and its shorter version (PFS-12). Breast cancer survivors were classified (i.e., none, mild, moderate, or severe fatigue) based on the cut-scores, and relationships between these cut-scores and decrements in health-related quality of life (HRQOL) were examined.

METHODS: A total of 857 breast cancer survivors, stages in situ-IIIa, from the Health, Eating, Activity, and Lifestyle (HEAL) Study were eligible. Survivors completed the PFS-R, SF-36, and a sexual health scale approximately 3 years after diagnosis. Multivariate analysis of covariance was used to examine five fatigue severity cut-score models, controlling for demographics, clinical characteristics, comorbidity, and antidepressant use. Multivariate regression was used to examine HRQOL decrements by cut-score category.

RESULTS: Analyses supported two similar fatigue severity cut-score models for the PFS-R and PFS-12: Model A.) none (0), mild (1-3), moderate (4-6), and severe (7-10); and Model D.) none (0), mild (1-2), moderate (3-5), and severe (6-10). For every threshold increase in fatigue severity, clinically meaningful decrements in physical, mental, and sexual health scores were observed, supporting construct validity of the fatigue cut-scores.

CONCLUSION: Standardized fatigue cut-scores may enhance interpretability and comparability across studies and populations and guide treating planning.
Detecting non-uniform period spacings in the Kepler photometry of gamma Doradus stars: methodology and case studies
Creators: name: Van Reeth, T.
name: Tkachenko, A.
name: Aerts, C.
name: Papics, P. I.
name: Degroote, P.
name: Debosscher, J.
name: Zwintz, K.
name: Bloemen, S.
name: De Smedt, K.
name: Hrudkova, M.
name: Raskin, G.
name: Van Winckel, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Context. The analysis of stellar oscillations is one of the most reliable ways to probe stellar interiors. Recent space missions such as Kepler have provided us with an opportunity to study these oscillations with unprecedented detail. For many multi-periodic pulsators such as γ Doradus stars, this led to the detection of dozens to hundreds of oscillation frequencies that could not be found from ground-based observations. Aims. We aim to detect non-uniform period spacings in the Fourier spectra of a sample of γ Doradus stars observed by Kepler. Such detection is complicated by both the large number of significant frequencies in the space photometry and by overlapping non-equidistant rotationally split multiplets. Methods. Guided by theoretical properties of gravity-mode oscillation of γ Doradus stars, we developed a period-spacing detection method and applied it to Kepler observations of a few stars, after having tested the performance from simulations. Results. The application of the technique resulted in the clear detection of non-uniform period spacing series for three out of the five treated Kepler targets. Disadvantages of the technique are also discussed, and include the disability to distinguish between different values of the spherical degree and azimuthal order of the oscillation modes without additional theoretical modelling. Conclusions. Despite the shortcomings, the method is shown to allow solid detections of period spacings for γ Doradus stars, which will allow future asteroseismic analyses of these stars.
description: 10 pages, 13 figures, 2 tables. Accepted for publication in Astronomy & Astrophysics
Fireball sheath instability
Creators: name: Dutta, Subham
name: Karmakar, Pralay Kumar
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The evolutionary existence of plasma fireballs is a generic phenomenon realizable in diversified physical plasma-dominated circumstances starting from the laboratory to the astrocosmic scales of space and time. A fair understanding of such fireballs and associated instabilities is indeed needed to enrich astroplasmic communities from various perspectives of applied value. Naturally occurring plasma fireball events include novae, meteors, stellar structures, etc. We propose a theoretical model formalism to analyze the plasma fireball sheath (PFS) instability with the application of a quasi-linear perturbative analysis on the laboratory spatiotemporal scales. This treatment reduces the steady-state system into a unique second-order ordinary differential equation (ODE) on the perturbed electrostatic potential with variable multiparametric coefficients. A numerical illustrative platform to integrate this ODE results in an atypical set of peakon-type potential-field structures. It is noticed that both the potential and field associated with the peakonic patterns change significantly with the effective radial distance from the reference origin outwards. The variations are more pronounced at the center (steep, stiff) than that in the off-centric regions (non-steep, non-stiff). A colormap obtained with the triangulation of the potential-field correlation with the radial distance further confirms the PFS stability behaviors in a qualitative corroboration with the previous predictions reported in the literature. The applicability of our analysis in both the laboratory and astrocosmic contexts is finally indicated.
description: 7 Pages, 4 Figures (in JOAA Press)
Die Praxis der Frauenordination in der tschechoslowakischen Untergrundkirche
Creators: name: Fiala, Petr
name: Hanuš, Jiří
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 35 Nr. 3 (1999): Concilium: Internationale Zeitschrift für Theologie, Band 35, Heft 3
Development and psychometric properties of the PROMIS® pediatric fatigue item banks
Creators: name: Lai, Jin-Shei
name: Yeatts, Karin B.
name: DeWalt, Darren A.
name: DeWitt, Esi Morgan
name: Varni, James W.
name: Irwin, Debra E.
name: Thissen, David
name: Stucky, Brian D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: This paper reports on the development and psychometric properties of self-reported pediatric fatigue item banks as part of the Patient Reported Outcomes Measurement Information System (PROMIS).
Quasi-normal modes for the D3-branes and Exact WKB analysis
Creators: name: Imaizumi, Keita
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate how the Exact WKB analysis works in the study of the quasi-normal modes (QNMs). We apply the Exact WKB analysis to a massless scalar perturbation to the D3-brane metric as a concrete example. The Exact WKB analysis provides an exact condition for the QNMs. We numerically check our exact condition by using the Borel-Padé approximation. We also present an analytic form and an asymptotic behavior of the QNMs.
description: 16 pages, 3 figures, (v2) references are added, (v3) typos corrected, published version
Associations of cancer and other chronic medical conditions with SF-6D preference-based scores in Medicare beneficiaries
Creators: name: Reeve, Bryce B.
name: Clauser, Steven B.
name: Smith, Ashley Wilder
name: Hays, Ron D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Documenting the impact of different types of cancer on daily functioning and well-being is important for understanding burden relative to other chronic medical conditions. This study examined the impact of 10 different cancers and 13 other chronic medical conditions on health-related quality of life.
Cognitive interviewing of the US National Cancer Institute’s Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (PRO-CTCAE)
Creators: name: Hay, Jennifer L.
name: Mitchell, Sandra A.
name: Schrag, Deborah
name: Reeve, Bryce B.
name: Gagne, Joshua
name: Willis, Gordon
name: Sit, Laura
name: Chen, Alice
name: Basch, Ethan
name: Paul, Diane B.
name: Rogak, Lauren
name: Minasian, Lori M.
name: Clauser, Steven B.
name: Denicoff, Andrea
name: Bennett, Antonia V.
name: Viswanath, Vish
name: Atkinson, Thomas M.
name: Mendoza, Tito R.
name: O’Mara, Ann
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: The National Cancer Institute’s Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (PRO-CTCAE) is a library of question items that enables patient reporting of adverse events (AEs) in clinical trials. This study contributes content validity evidence of the PRO-CTCAE by incorporating cancer patient input of the relevance and comprehensiveness of the item library.