Miracle-dz/UniFAR-FTUs huggingface dataset:
Study of semiclassical instability of the Schwarzschild AdS black hole in the large D limit

We analyze the semiclassical stability of the Schwarzschild AdS black hole in the Euclidean partition function approach. We perform this computation in the large D limit and focus on scalar perturbations. We obtain the equations for non-spherically symmetric scalar perturbations in a simple form. For a class of perturbations stability is demonstrated by the S-deformation method. For some other classes we rule out unstable modes of . We also analyze the spherically symmetric perturbations and demonstrate the appearance of an unstable mode for small black holes in the large D limit. We obtain an expression for the eigenvalue corresponding to the unstable mode to next to leading order in a 1/D expansion. This result agrees with a previously obtained numerical bound on this eigenvalue. For cosmological constant zero, our answer matches a previous result obtained for the corresponding eigenvalue for the D dimensional Schwarzschild–Tangherlini black hole to next to leading order in a 1/D expansion.
Observation of New Incommensurate Magnetic Correlations at the Lower Critical Concentration for Superconductivity (x=0.05) in La(2-x)Sr(x)CuO4

Neutron-scattering experiments have been performed on lightly-doped La(2-x)Sr(x)CuO4 single crystals in both the insulating (x=0.03,0.04,0.05) and superconducting (x=0.06) regions. Elastic magnetic peaks are observed at low temperatures in all samples with the maximum peak linewidth occuring at the critical concentration x_c=0.05. New incommensurate peaks are observed only at x=0.05, the positions of which are rotated by 45 degrees in reciprocal space about (pi,pi) from those observed for x>=0.06 in the superconducting phase.
Stability of phantom k-essence theories

We show that phantom dark energy, if it is described by a k-essence theory, has three fundamental problems: first, its Hamiltonian is unbounded from below. Second, classical stability precludes the equation of state from crossing the 'Lambda-barrier', w{sub {lambda}}=-1. Finally, both the equation of state and the sound speed are unbounded - the first, from below, the second, from above - if the kinetic term is not bounded by dynamics.
Complete stabilization and improvement of the characteristics of tunnel junctions by thermal annealing

The authors have observed that submicron sized Al–AlOx–Al tunnel junctions can be stabilized completely by annealing them in vacuum at temperatures between 350 and 450°C. In addition, low temperature characterization of the samples after the annealing treatment showed a marked improvement of the tunneling characteristics due to the disappearance of unwanted resonances in the current. Charging energy, tunneling resistance, barrier thickness, and height all increase after the treatment. The superconducting gap is not affected, but supercurrent is reduced in accordance with the increase of tunneling resistance.
Enhanced critical temperature, pairing fluctuation effects, and BCS-BEC crossover in a two-band Fermi gas

We study the superfluid critical temperature in a two-band attractive Fermi system with strong pairing fluctuations associated with both interband and intraband couplings. We focus specifically on a configuration where the intraband coupling is varied from weak to strong in a shallow band coupled to a weakly-interacting deeper band. The whole crossover from the Bardeen-Cooper-Schrieffer (BCS) condensation of largely overlapping Cooper pairs to the Bose-Einstein condensation (BEC) of tightly bound molecules is covered by our analysis, which is based on the extension of the Nozi\`{e}res-Schmitt-Rink (NSR) approach to a two-band system. In comparison with the single-band case, we find a strong enhancement of the critical temperature, a significant reduction of the preformed pair region where pseudogap effects are expected, and the entanglement of two kinds of composite bosons in the strong-coupling BEC regime.
Utility of Structural Equation Modeling in Social Work Research: A Call to Strengthen Doctoral Education

ABSTRACT The use of structural equation modeling (SEM) techniques in social work has increased over the last two decades. We therefore conducted a systematic review to understand the extent to which SEM is utilized in social work research, given that statistical training is now becoming a part of social work doctoral education. For our review, we utilized the PRISMA method and relied on the Web of Knowledge database. Social work articles published between March 2012 to December 2017 were included in the review. In total, we included 466 studies using SEM methods that were published across 44 social work journals. To our knowledge, this is the most up-to-date review that summarizes the extent to which research published in journals of social work utilizes SEM. Owing to the strengths of SEM over standard regression methods, its increased use demonstrates advanced application of data analysis methods in the dissemination of social work research. Further implications for social work research and education are discussed. Specifically, we discuss the role of social work doctoral programs in equipping students to efficiently utilize SEM techniques in research.
The Birth of Tragedy? Extremely Premature Births and Shared Decision-Making

Bunnik, E. M. , and N. Aarts. 2018. A model for communication about longshot treatments in the context of early access to unapproved, investigational drugs. The American Journal of Bioethics 18 (1):34–6. doi:10.1080/ 15265161.2017. 1401170. de Vries, M. , A. Fagerlin, H. O. Witteman, and L. D. Scherer. 2013. Combining deliberation and intuition in patient decision support. Patient Education and Counseling 91 (2):154–60. doi:10.1016/j.pec. 2012.11. 016. Geurtzen, R. , A. F. J. van Heijst, J. M. T. Draaisma, L. J. M. K. Kuijpers, M. Woiski, H. C. J. Scheepers, A. H. van Kaam, M. A. Oudijk, H. N. Lafeber, C. J. Bax, et al. 2019. Development of nationwide recommendations to support prenatal counseling in extreme prematurity. Pediatrics 143 (6):e20183253. doi:10.1542/peds.2018-3253. Jager, S. , K. Kavanaugh, S. Hoffman, T. Laitano, E. Jeffries, and B. Tucker Edmonds. 2020. Parents’ descriptions of neonatal palliation as a treatment option prior to periviable delivery. The Journal of Perinatal & Neonatal Nursing 34 (2):178–85. doi:10. 1097/JPN.0000000000000483. Keenan, H. T. , M. W. Doron, and B. A. Seyda. 2005. Comparison of mothers’ and counselors’ perceptions of predelivery counseling for extremely premature infants. Pediatrics 116 (1):104–11. doi:10.1542/peds.2004-1340. Moro, T. T. , K. Kavanaugh, T. A. Savage, M. R. Reyes, R. E. Kimura, and R. Bhat. 2011. Parent decision making for life support for extremely premature infants: From the prenatal through end-of-life period. The Journal of Perinatal & Neonatal Nursing 25 (1):52–60. doi:10.1097/ JPN.0b013e31820377e5. Syltern, J., L. Ursin, B. Solberg, and R. Stoen. 2022. Postponed withholding: Balanced decision-making at the margins of viability. The American Journal of Bioethics 22 (11):15–26. doi:10.1080/15265161.2021. 1925777. Tucker Edmonds, B. , T. A. Savage, R. E. Kimura, S. J. Kilpatrick, M. Kuppermann, W. Grobman, and K. Kavanaugh. 2019. Prospective parents’ perspectives on antenatal decision making for the anticipated birth of a periviable infant. The Journal of Maternal-Fetal & Neonatal Medicine : The Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians 32 (5):820–5. Vinall, J., and R. E. Grunau. 2014. Impact of repeated procedural pain-related stress in infants born very preterm. Pediatric Research 75 (5):584–7. doi:10.1038/pr.2014. 16. Walker, S. M. 2019. Long-term effects of neonatal pain. Seminars in Fetal & Neonatal Medicine 24 (4):101005. doi:10.1016/j.siny. 2019.04. 005. Wilkinson, D. , E. Verhagen, and S. Johansson. 2018. Thresholds for resuscitation of extremely preterm infants in the UK, Sweden, and Netherlands. Pediatrics 142 (Suppl 1):S574–S584. doi:10.1542/peds.2018-0478I.
Significant task activates trait gratitude for organizational citizenship behaviors: The mediating role of psychological availability

ABSTRACT The benefits of gratitude are universally recognized in psychology and other disciplines. However, the capacity for trait gratitude to bring advantages to employees and organizations is an under-explored area despite the fact that trait gratitude could offer considerable benefits to organizational performance and success through its potential impact on organizational citizenship behaviours (OCBs). Based on trait activation theory, a model was put forward to examine the influence of trait gratitude on OCBs through the impact that trait gratitude has upon psychological availability. Additionally, task significance was explored as a moderator of the relationship between trait gratitude and psychological availability. The model was tested across two studies. Study 1 involved a multi-phase and multi-source survey of 178 leader-member dyads from a chemical company and an electricity firm. Study 2 was a preregistered experiment involving 205 full-time employees from a range of industries including finance, retailing, entertainment, information technology, law, engineering and other industries. In both studies the mediated moderation model of workplace trait gratitude on OCBs was supported. Limitations, implications for research and practice are addressed.
The urban system of Russia from 1991–2020: gradual development instead of radical transformation

ABSTRACT An analysis of the evolution of the urban system of the Russian Federation in the period from 1991 to 2020 reveals an increase in heterogeneity of city development due to the growth of large cities and a decrease in the population of small cities, alongside a spatial shift in an east–west direction, although these changes are far less marked and slower than originally anticipated at the start of the transition from a planned to a market economy. Market potential, specialization, infrastructure, the administrative status of the city and geographical location all play a role, but market potential and its individual components have ambiguous effects because negative competitive aspects of interregional relations outweigh positive cooperative aspects and positive effects work mainly at the level of the individual subjects of the Russian Federation.
Erasures of gender in/equity in Australian schooling: ‘The program is not about turning boys into girls’

ABSTRACT This paper is a making, a cartography that maps gender equity policy in Australian education. I suggest that entrenched reductive sexist, racist, homo/transphobic and misogynistic practices have not significantly shifted materially since the implementation of inaugural gender equity programs in the 1970s, despite the investment of much money, research and purported policy changes. My cartography intentionally draws attention to how policy material impacts precarious bodies in education; those that remain firmly classified as girls and the intersecting disadvantages of students who identify as Black, Indigenous, people of color (BIPOC), gender diverse, and Lesbian, Gay, Bisexual, Transexual, Queer, Intersex (LGBTQI+). I propose that gender in/equity that continues to flourish in our schools is a consequence of an ongoing patriarchal heteronormative education policy that has efficiently removed gender from the equity equation. At present gender, inequity is hidden in plain sight and gender and sex-based violence and harassment remain rife in schools, covertly entangled in practices and processes.
GALAXY GROUPS IN THE 2MASS REDSHIFT SURVEY

A galaxy group catalog is constructed from the 2MASS Redshift Survey (2MRS) with the use of a halo-based group finder. The halo mass associated with a group is estimated using a “GAP” method based on the luminosity of the central galaxy and its gap with other member galaxies. Tests using mock samples show that this method is reliable, particularly for poor systems containing only a few members. On average, 80% of all the groups have completeness , and about 65% of the groups have zero contamination. Halo masses are estimated with a typical uncertainty of . The application of the group finder to the 2MRS gives 29,904 groups from a total of 43,246 galaxies at , with 5286 groups having two or more members. Some basic properties of this group catalog is presented, and comparisons are made with other group catalogs in overlap regions. With a depth to and uniformly covering about 91% of the whole sky, this group catalog provides a useful database to study galaxies in the local cosmic web, and to reconstruct the mass distribution in the local universe.
Adjustment of Cotton Fiber Length by the Statistical Normal Distribution: Application to Binary Blends

In this study the normality of the cotton fiber length number distribution and weight distribution are tested by using the Chi-2 statistic test. Good correlations between the cotton fiber length distribution by weight and the normal distribution with the same mean and standard deviation are obtained. This test further shows that length distribution by numbers cannot be characterized by normal law. Then, the staple diagram and the fibrogram by weight are mathematically generated from a normal fiber length distribution. After that, mathematical models relating the most common length parameters to the mean length and the coefficient of variation are established by solving the staple diagram and the fibrogram equations. Finally, the length parameters of binary blends are studied and their variations in terms of the components of the blend are shown. These variations are nonlinear for most of the blend length parameters in contrast to other studies and models usually used by the spinners that suppose that the blend characteristics and particularly length parameters are linear to the components ratios.
The Benefits of an Innovative Teaching Pedagogy Aimed at Combining Theory and Practice in Social Work

ABSTRACT Being a social worker requires facing many social upheavals, juggling with organizational changes, and working with various populations with increasing complex social issues. Future social workers must quickly familiarize themselves with the conditions of the practice. In order to do so, it is essential to provide students with multiple opportunities to integrate theory and practice throughout the school curriculum through educational activities that are as close as possible to professional practise. This article shows the results of a qualitative study that compares the comments of two groups of students, one exposed to an experiential pedagogy and the other not, in order to better understand the benefits of pedagogy for the integration of theory into practice. One of the principal results of this study shows that putting students in situations similar to practice environments makes the learning meaningful, promotes the integration of theory and practice, and strengthens professional identity.
THE DEFINITIVE X-RAY LIGHT CURVE OF SWIFT J164449.3+573451

On 2011 March 28, the Swift Burst Alert Telescope triggered on an object that had no analog in over six years of Swift operations. Follow-up observations by the Swift X-ray Telescope (XRT) found a new, bright X-ray source covering three orders of magnitude in flux over the first few days, that was much more persistent (and variable) than gamma-ray burst afterglows. Ground-based spectroscopy found a redshift of 0.35, implying extremely high luminosity, with integrated isotropic-equivalent energy output in the X-ray band alone exceeding 1053 erg in the first two weeks after discovery. Strong evidence for a collimated outflow or beamed emission was found. The observational properties of this object are unlike anything ever before observed. We interpret these unique properties as the result of emission from a relativistic jet produced in the aftermath of the tidal disruption of a main sequence star by a massive black hole (BH) in the center of the host galaxy. The source decayed slowly as the stellar remnants were accreted onto the BH, before abruptly shutting off. Here we present the definitive XRT team light curve for Swift J164449.3+573451 and discuss its implications. We show that the unabsorbed flux decayed roughly as a t − 1.5 ? > power law up to 2012 August 17. The steep turnoff of an order of magnitude in 24 hr seems to be consistent with the shutdown of the jet as the accretion disk transitioned from a thick disk to a thin disk. Swift continues to monitor this source in case the jet reactivates.
AdS gravity, SO(2, d) gauge theory and holography

Inspired by the general relation between the boundary global symmetry and the bulk gauge symmetry in AdS/CFT, we reformulate the d + 1 dimensional AdS gravity theory as a SO(2, d) gauge theory. In this formalism, the pull back of the bulk equation of motion onto a co-dimension one hypersurface Σ can be naturally related to the SO(2, d) conservation law under a local energy scale in the dual CFT. The consistency of CFT requires that the SO(2, d) covariant anomaly vanishes at arbitrary scale. After imposing a covariant area law as the renormalization condition, the vanishing of SO(2, d) anomaly implies that the dual bulk geometries must satisfy the Einstein equation.
Kinematics of Ultracompact H II Regions Revealed: High Spatial and Spectral Resolution Mapping of the 12.8 Micron [Ne II] Line in Monoceros R2

We present the first results of a study of the kinematics and morphology of ultracompact H II regions by using a new observational technique. We used very high spatial and spectral resolution observations (θbm = 1.″4, ΔV = 3.4 km s-1) of the [Ne II] line at 12.8 μm to study the ionized gas in Monoceros R2. The [Ne II] emission shows an H II region with highest emission measure in a ~24'' diameter shell, surrounded on all sides by neutral material. [Ne II] line widths are as narrow as 8 km s-1 at some positions. In places where the lines are complex and broader, the additional width is most likely due to overlap of narrower features along the line of sight. The narrow features themselves, however, are broader than the purely thermal width. The global kinematics suggest that the 24'' shell is expanding at ≈10 km s-1. This interpretation leads to a dynamical age for the H II region of less than 104 yr. However, the spectral profiles toward the brightest part of the nebula (on the southeast side of the shell) are not consistent with a simple expansion picture. Both the 24'' shell and the bright southeast ridge can be part of a common kinematic pattern in which material flows from the bottom to the rim of a bowl-like feature. High-resolution observations of mid-IR fine-structure transitions offer great promise as a probe of the kinematics and morphology of ionized regions around very young massive stars. Once appropriate theoretical modeling and observations of a larger sample of ultracompact H II regions are in place, it should be possible to determine the physics behind the observed systematic motions in sources such as Mon R2.
The Kinematics, Orbit, and Survival of the Sagittarius Dwarf Spheroidal Galaxy

The Sagittarius galaxy (Sgr), the closest satellite galaxy of the Milky Way, has survived for many orbits about the Galaxy. Extant numerical calculations modeled this galaxy as a system with a centrally-concentrated mass profile, following the light, and found that it should lose more than one-half of its mass every 2--4 orbits and be completely disrupted long before now. Apparently Sgr, and by implication other dSph galaxies, do not have a centrally-concentrated profile for their dark matter. We develop a model in which the stars of the Sgr dwarf are embedded in a constant-density dark matter halo, representing the core of a tidally-limited system, and show that this is consistent with its survival. We present new photometric and kinematic observations of Sgr and show these data are consistent with this explanation for the continued existence of this galaxy. Sgr is being tidally distorted and is tidally limited, but is not disrupted as yet. The corresponding minimum total mass is $10^9 \msun$, while the central mass to visual light ratio $\sim 50$ in Solar units. Our new photographic photometry allows the detection of main-sequence stars of Sgr over an area of $22\deg \times 8\deg$. Sgr is prolate, with axis ratios $\sim$~3:1:1. For an adopted distance of $16 \pm 2 \kpc$ from the Galactic center on the opposite side of the Galaxy to the Sun, the major axis is $\gta 9 \kpc$ long and is aligned approximately normal to the plane of the Milky Way Galaxy, roughly following the coordinate line $\ell=5^\circ$. The central velocity dispersion of giant stars which are members of Sgr is $11.4 \pm 0.7 \kms$ and is consistent with being constant over the face of the galaxy. The gradient in mean line-of-sight velocity with position along the
Relationships of circulating CD4+ T cell subsets and cytokines with the risk of relapse in patients with Crohn’s disease

Background and aims We aimed to analyze circulating CD4+ T cell subsets and cytokines during the course of Crohn’s disease (CD). Methods and results CD4+ T cell subsets, ultrasensitive C-reactive protein (usCRP), and various serum cytokines (IL-6, IL-8, IL-10, IL-13, IL-17A, IL-23, TNFα, IFNγ, and TGFβ) were prospectively monitored every 3 months for 1 year, using multicolor flow cytometry and an ultrasensitive Erenna method in CD patients in remission at inclusion. Relapse occurred in 35 out of the 113 consecutive patients (31%). For patients in remission within 4 months prior to relapse and at the time of relapse, there was no significant difference in Th1, Th17, Treg, and double-positive CD4+ T cell subsets co-expressing either IFNγ and FOXP3, IL-17A and FOXP3, or IFNγ and IL-17A. On the contrary, in patients who remained in remission, the mean frequency and number of double-positive IL-17A+FOXP3+ CD4+ T cells and the level of usCRP were significantly higher (p ≤ 0.01) 1 to 4 months prior to relapse. At the time of relapse, only the IL-6 and usCRP levels were significantly higher (p ≤ 0.001) compared with those patients in remission. On multivariate analysis, a high number of double-positive IL-17A+FOXP3+ CD4+ T cells (≥1.4 cells/mm3) and elevated serum usCRP (≥3.44 mg/L) were two independent factors associated with risk of relapse. Conclusions Detection of circulating double-positive FOXP3+IL-17A+ CD4+ T cell subsets supports that T cell plasticity may reflect the inflammatory context of Crohn’s disease. Whether this subset contributes to the pathogenesis of CD relapse needs further studies.