bluuebunny/crossref_metadata_2025_split huggingface dataset:
Speckle Interferometry at SOAR in 2018
Authors: Tokovinin Andrei , Mason Brian D. , Mendez Rene A. , Horch Elliott P. , Briceño Cesar 
Published: July 2019

Abstract
The results of speckle interferometric observations at the 4.1 m Southern Astrophysical Research Telescope (SOAR) in 2018 are given, totaling 3097 measurements of 2427 resolved pairs with separations from 11 mas to 5.″9 (median 0.″15, magnitude difference up to 7 mag) and nonresolutions of 624 targets. This work continues our long-term speckle program. Its main goal is to monitor orbital motion of close binaries, including members of high-order hierarchies and Hipparcos pairs in the solar neighborhood. Also, pre-main-sequence stars in the Orion OB1 association were surveyed, resolving 26 out of 118 targets. In addition, we report the discovery of 35 new companions among field visual multiples (some of which are likely optical) and first-time resolutions of another 31 pairs. By combining the measurements given here with the published ones, we computed 76 orbits for the first time and updated orbital elements of 34 visual binaries. Their periods range from 0.65 to 1100 yr, and their quality varies from first tentative solutions of grade 5 to accurate elements of grades 1 and 2. Finally, a list of 53 spurious pairs discovered by various techniques and unresolved at SOAR is given.
Thermal Emission from the Uranian Ring System
Authors: Molter Edward M. , Pater Imke de , Roman Michael T. , Fletcher Leigh N. 
Published: July 2019

Abstract
The narrow main rings of Uranus are composed of almost exclusively centimeter- to meter-sized particles, with a very small or nonexistent dust component; however, the filling factor, composition, thickness, mass, and detailed particle size distribution of these rings remain poorly constrained. Using millimeter (1.3–3.1 mm) imaging from the Atacama Large (sub-)Millimeter Array and mid-infrared (18.7 μm) imaging from the Very Large Telescope VISIR instrument, we observed the thermal component of the Uranian ring system for the first time. The ϵ ring is detected strongly and can be seen by eye in the images; the other main rings are visible in a radial (azimuthally averaged) profile at millimeter wavelengths. A simple thermal model similar to the Near-Earth Asteroid Thermal Model (NEATM) of near-Earth asteroids is applied to the ϵ ring to determine a ring particle temperature of 77.3 ± 1.8 K. The observed temperature is higher than expected for fast-rotating ring particles viewed at our observing geometry, meaning that the data favor a model in which the thermal inertia of the ring particles is low and/or their rotation rate is slow. The ϵ ring displays a factor of 2–3 brightness difference between periapsis and apoapsis, with 49.1% ± 2.2% of sightlines through the ring striking a particle. These observations are consistent with optical and near-infrared reflected light observations, confirming the hypothesis that micron-sized dust is not present in the ring system.
HD 1397b: A Transiting Warm Giant Planet Orbiting A V = 7.8 mag Subgiant Star Discovered by TESS
Authors: Brahm Rafael , Espinoza Néstor , Jordán Andrés , Henning Thomas , Sarkis Paula , Jones Matías I. , Díaz Matías R. , Jenkins James S. , Vanzi Leonardo , Zapata Abner , Petrovich Cristobal , Kossakowski Diana , Rabus Markus , Rojas Felipe , Torres Pascal 
Published: July 2019

Abstract
We report the discovery of a transiting planet first identified as a candidate in Sector 1 of the Transiting Exoplanet Survey Satellite (TESS), and then confirmed with precision radial velocities. HD 1397b has a mass of

, a radius of

, and orbits its bright host star (V = 7.8 mag) with an orbital period of

d on a moderately eccentric orbit (

). With a mass of

, a radius of

, and an age of

Gyr, the solar-metallicity host star has already departed from the main sequence. We find evidence in the radial velocity measurements of a secondary signal with a longer period. We attribute it to the rotational modulation of stellar activity, but a long-term radial velocity monitoring would be necessary to discard if this signal is produced by a second planet in the system. The HD 1397 system is among the brightest ones currently known to host a transiting planet, which will make it possible to perform detailed follow-up observations in order to characterize the properties of giant planets orbiting evolved stars.
The Extragalactic Gamma-Ray Background from Core-dominated Radio Galaxies
Authors: Stecker Floyd W. , Shrader Chris R. , Malkan Matthew. A. 
Published: July 2019

Abstract
Recent radio surveys have discovered a large number of low-luminosity core-dominated radio galaxies that are much more abundant than those at higher luminosities. These objects will be too faint in γ-rays to be detected individually by Fermi. Nevertheless, they may contribute significantly to the unresolved extragalactic γ-ray background. We consider here the possible contribution of these core-dominated radio galaxies to the diffuse extragalactic γ-ray background. Using published data available for all 45 of the radio galaxies listed as detected counterparts in the Fermi FL8Y source list update to the 3FGL catalog, we have searched for radio maps that can resolve the core flux from the total source flux. Using high-resolution radio maps we were able to obtain core fluxes for virtually every source. We then derived a relation between core radio flux and γ-ray flux that we extrapolated to sources with low radio luminosities that are known to be highly core-dominated. We then employed a very recent determination of the luminosity function for core-dominated radio galaxies in order to obtain the contribution of all possible γ-ray-emitting radio galaxies to the unresolved extragalactic γ-ray background. We find this contribution to be possibly non-negligible, 4%–18% of the unresolved γ-ray background observed using the Fermi-LAT telescope.
Alfvén Wave-driven Wind from RGB and AGB Stars
Authors: Yasuda Yuki , Suzuki Takeru K. , Kozasa Takashi 
Published: July 2019

Abstract
We develop a magnetohydrodynamical model of Alfvén wave-driven wind in open magnetic flux tubes piercing the stellar surface of red giant branch (RGB) and asymptotic giant branch (AGB) stars, and investigate the physical properties of the winds. The model simulations are carried out along the evolutionary tracks of stars with initial mass in the range of 1.5–3.0 M
⊙ and initial metallicity Z
ini = 0.02. Setting the surface magnetic field strength to 1 G, we find that the wind during the evolution of the star can be classified into the following four types: the first is wind with velocity higher than 80 km s−1 in the RGB and early AGB (E-AGB) phases, the second is wind with outflow velocity less than 10 km s−1 seen around the tip of the RGB or in the E-AGB phase, the third is the unstable wind in the E-AGB and thermally pulsing AGB (TP-AGB) phases, and the fourth is the stable massive and slow wind with mass-loss rate higher than 10−7
M
⊙ yr−1 and outflow velocity lower than 20 km s−1 in the TP-AGB phase. The mass-loss rates in the first and second types of wind are two or three orders of magnitude lower than the values evaluated by an empirical formula. The presence of a massive and slow wind of the fourth type suggests the possibility that the massive outflow observed in TP-AGB stars could be attributed to Alfvén wave-driven wind.
The Synchrotron Emission Pattern of Intrabinary Shocks
Authors: Kandel D. , Romani Roger W. , An Hongjun 
Published: July 2019

Abstract
We model millisecond pulsar winds colliding with radiatively driven companion winds in black widow and redback systems. For the redbacks, the geometry of this intrabinary shock (IBS) is quite sensitive to the expected equatorial concentration in the pulsar outflow. We thus analytically extend IBS thin-shock models to

pulsar winds. We compute the synchrotron emission from such shocks, including the buildup and cooling of the particle population as it accelerates along the IBS. For reasonable parameters, this IBS flux dominates the binary emission in the X-ray band. The modeling shows subtle variation in spectrum across the IBS peak, accessible to sensitive X-ray studies. As example applications, we fit archival CXO/XMM data from the black widow pulsar J1959+2048 and the redback PSR J2339–0533, finding that the model reproduces well the orbital light-curve profiles and energy spectra. The results show a very hard injected electron spectrum, indicating likely dominance by reconnection. The light-curve fitting is sensitive to the geometric parameters, including the very important orbital inclination i. Coupled with optical fits of the companion star, such IBS X-ray light-curve modeling can strongly constrain the binary geometry and the energetics of the millisecond pulsar wind.
Classification of Broad Absorption Line Quasars with a Convolutional Neural Network
Authors: Guo Zhiyuan , Martini Paul 
Published: July 2019

Abstract
Quasars that exhibit blueshifted, broad absorption lines (BAL QSOs) are an important probe of black hole feedback on galaxy evolution. Yet the presence of BALs is also a complication for large spectroscopic surveys that use quasars as cosmological probes because the BAL features can affect redshift measurements and contaminate information about the matter distribution in the Lyα forest. We present a new BAL QSO catalog for quasars in the Sloan Digital Sky Survey (SDSS) Data Release 14 (DR14). As the SDSS DR14 quasar catalog has over 500,000 quasars, we have developed an automated BAL classifier with a Convolutional Neural Network (CNN). We trained our CNN classifier on the C iv
λ 1549 region of a sample of quasars with reliable human classifications, and compared the results to both a dedicated test sample and visual classifications from the earlier SDSS DR12 quasar catalog. Our CNN classifier correctly classifies over 98% of the BAL quasars in the DR12 catalog, which demonstrates comparable reliability to human classification. The disagreements are generally for quasars with lower signal-to-noise ratio spectra and/or weaker BAL features. Our new catalog includes the probability that each quasar is a BAL, the strength, blueshifts and velocity widths of the troughs, and similar information for any Si iv
λ 1398 BAL troughs that may be present. We find significant BAL features in 16.8% of all quasars with 1.57 < z < 5.56 in the SDSS DR14 quasar catalog.
Mindfulness-Based Stress Reduction Versus a Health Enhancement Program in the Treatment of Urge Urinary Incontinence in Older Adult Women: A Randomized Controlled Feasibility Study
Authors: Felsted Katarina Friberg , Supiano Katherine P. 
Published: July 2019

Current treatment practices for older adult women with urge urinary incontinence (UUI) remain insufficient and ineffective. A randomized controlled feasibility trial was developed to evaluate three determinants of research feasibility and three determinants of intervention feasibility when comparing mindfulness-based stress reduction (MBSR) with a health enhancement program (HEP) in older adult women with UUI. Participants were recruited from the university health system, county senior centers, and community sites. Twenty-five postmenopausal women (mean age = 74 years) were randomized into MBSR treatment conditions or HEP comparison conditions for an 8-week intervention. Participants remained blinded to conditions. Research feasibility determinants were measured as
recruitment, retention,
and
treatment delivery
; intervention feasibility determinants were measured as
acceptability, tolerability
, and
client receipt/enactment
. Feasibility determinants established in the research literature as essential to intervention evaluation were recorded and evaluated throughout the current study. All six feasibility determinants confirmed positive results in the enrolled population. The use of MBSR and HEP as the active comparison to treat UUI in older adult women proved feasible in this trial. The results warrant the design of a larger-scale, multisite trial to study the efficacy of MBSR in treating UUI in older adult women.

Targets:
Older adult women with high incidence of UUI.

Intervention Description:
MBSR treatment conditions or HEP comparison conditions.

Mechanisms of Action:
Research and intervention feasibility determinants.

Outcomes:
The use of MBSR and HEP as the active comparison to treat UUI in older adult women proved feasible in this trial.

[
Research in Gerontological Nursing, 12
(6), 285–297.]
Effect of liner on the marginal integrity of resin composite restorations after selective caries excavation: An In Vitro study
Authors: Datta Shailaja , Suprabha Baranya Shrikrishna , Suman Ethel , Shenoy Ramya , Rao Arathi , Nandita K. P. 
Published: July 2019

Abstract
Aim: The aim of this study is to evaluate the effect of cavity liner on marginal adaptation and microleakage of resin composite restorations placed with and without selective caries excavation. Materials and Methods: Class II cavities were prepared in 64 extracted upper premolar teeth followed by microbiological caries induction to simulate deep carious lesions. Composite restorations were performed: Group 1A: without liner and Group 1B: with resin-modified glass ionomer liner after nonselective caries excavation; Group 2A: without liner and Group 2B: with resin-modified glass ionomer liner after selective caries excavation. Maximum gap thickness was measured using a scanning electron microscope to assess the marginal adaptation, and dye penetration method was used for microleakage assessment. Results: There was a statistically significant difference between the groups in maximum gap thickness based on the type of caries excavation (P < 0.001) but not for the placement of liner. Selective caries excavation groups had higher values at all margins. Microleakage between the groups was significantly different, both at the occlusal (P = 0.006) and gingival margins (P < 0.001), with Groups 2A and 2B showing higher microleakage. Conclusion: Resin composite restorations performed after selective caries excavation showed decreased marginal integrity and liner application did not contribute to any significant improvement in the same.
Primary Care Occupational Therapy: How Can We Get There? Remaining Challenges in Patient-Centered Medical Homes
Authors: Pape Sharon B. , Muir Sherry 
Published: July 2019

Abstract
Passage of the Patient Protection and Affordable Care Act in 2010 mandated reform of the United States’ existing primary care system. As part of this reform, advanced practice models, including the Patient-Centered Medical Home model, expanded, with the goal of increasing the use of interprofessional teams. Integrating occupational therapy was promoted as an opportunity to enhance the value of care provided in these redesigned primary care practices. However, occupational therapy’s presence in primary care is still extremely limited.
Statistical theory of probabilistic hazard maps: a probability distribution for the hazard boundary location
Authors: Hyman David M. , Bevilacqua Andrea , Bursik Marcus I. 
Published: July 2019

Abstract. The study of volcanic flow hazards in a probabilistic framework centers around systematic experimental numerical modeling of the hazardous phenomenon and the subsequent generation and interpretation of a probabilistic hazard map (PHM). For a given volcanic flow (e.g., lava flow, lahar, pyroclastic flow, ash cloud), the PHM is typically interpreted as the point-wise probability of inundation by flow material. In the current work, we present new methods for calculating spatial representations of the mean, standard deviation, median, and modal locations of the hazard's boundary as ensembles of many deterministic runs of a physical model. By formalizing its generation and properties, we show that a PHM may be used to construct these statistical measures of the hazard boundary which have been unrecognized in previous probabilistic hazard analyses. Our formalism shows that a typical PHM for a volcanic flow not only gives the point-wise inundation probability, but also represents a set of cumulative distribution functions for the location of the inundation boundary with a corresponding set of probability density functions. These distributions run over curves of steepest probability gradient ascent on the PHM. Consequently, 2-D space curves can be constructed on the map which represents the mean, median, and modal locations of the likely inundation boundary. These curves give well-defined answers to the question of the likely boundary location of the area impacted by the hazard. Additionally, methods of calculation for higher moments including the standard deviation are presented, which take the form of map regions surrounding the mean boundary location. These measures of central tendency and variance add significant value to spatial probabilistic hazard analyses, giving a new statistical description of the probability distributions underlying PHMs. The theory presented here may be used to aid construction of improved hazard maps, which could prove useful for planning and emergency management purposes. This formalism also allows for application to simplified processes describable by analytic solutions. In that context, the connection between the PHM, its moments, and the underlying parameter variation is explicit, allowing for better source parameter estimation from natural data, yielding insights about natural controls on those parameters.
Ortega y Gasset y Eugenio d’Ors intérpretes de Maquiavelo
Authors: Ghia Walter 
Published: July 2019

A principios del siglo XX (1904) Maquiavelo ya es un autor celebrado por Ortega y Gasset, que aborrece el siglo XIX como conclusión de una época, pero que admira sobremanera el Renacimiento. Solo veinte años después –en España invertebrada– la admiración hacia Maquiavelo, se plantea de forma específica y las páginas de El Príncipe se interpretan como el comentario genial “de un italiano a los hechos de dos españoles”, Fernando el Católico y César Borja.
La postura de D’Ors es muy diferente. A pesar de que él, en 1920, abogue en favor de Maquiavelo contra el “juicio vulgar” –en cuanto “venganza simbólica y perdurable de la Inteligencia contra la Astucia”–, por cierto concluye colocándose entre los críticos más radicales: según D’Ors, Maquiavelo reitera en la Modernidad el paganismo del emperador Juliano, y anticipa –contra Dante y su teoría del imperio– el destino de una Europa fragmentada, donde pelean ideas y naciones, sin referencia alguna a una autoridad de alcance universal.
Is photography really limited in its capacity to communicate thought? A response to Hopkin
Authors: Atencia Linares Paloma 
Published: July 2019

In The Real Challenge to Photography (as a communicative representational art), Robert Hopkins claims that a particular and significant kind of photography – what he calls ‘authentic’ photography – cannot exploit the same range of resources as non-photographic images when it comes to communicating thoughts. In this paper, I question this claim by raising concerns regarding the conditions Hopkins poses for something to qualify as communication of thoughtand, more importantly, by arguing that there are indeed techniques in ‘authentic’ photography that allow the artist to exploit the vehicle properties of the medium independently of the content
Different neurocognitive patterns of conflict control in Tibetans living above and below 4,000 m
Authors: Ma Hailin , Han Buxin , Wang Yan 
Published: July 2019

Background
The existence of a particular threshold of hypoxia severity, beyond which neuropsychological functioning is compromised, is unclear. We investigated the neurocognitive profile related to conflict control in healthy young Tibetans born and living at three different altitudes (2,700 m, 3,700 m, and 4,500 m) in Tibet to investigate the existence of this threshold.

Methods
Using event-related potentials (ERPs), the conflict control functions of individuals in the three altitude groups were investigated by means of a flanker task, using congruent and incongruent stimuli. The data were analyzed using mixed-model analyses of variance.

Results
Although effect of altitude was not significant at a behavioral level (p > 0.05), the ERPs showed cognitive conflict modulation. The N2 difference wave (for incongruent minus congruent conditions) was smaller in the 4,500-m group than in the groups living below 4,000 m (p < 0.05). The study’s findings suggest that the influence of high altitude in the conflict monitoring stage becomes significant above 4,000 m. Thus, the altitude threshold for impairment of cognition may be 4,000 m.
Prevalence of Benign Breast Lesions, Epithelial Proliferations with or without Atypia in Calabar-A Retrospective Review
Authors: Ebughe G. A. , Ugbem T. I. , Ushie D. E. , Effewongbe S. , Udosen J. E. , Umoh M. S. 
Published: July 2019

Aims: The aim of this study is to find out the prevalence of benign breast lesions and proliferative lesions which are associated with increase risk of breast cancer. This is aimed at influencing the hospital policy on mammographic screening.
Study Design: Descriptive retrospective study involving a trend analysis of benign breast lesion, proliferative analysed in the surgical pathology unit of the University of Calabar Teaching Hospital between 1st of January 2012 to October 31st 2014.
Place and Duration of Study: Pathology Department of the University of Calabar Teaching Hospital. The study was carried out between March and April 2019.
Methodology: Descriptive retrospective study of trend analysis of benign and proliferative breast lesions over the period with literature review.
Results: Two hundred and seventeen 217 patients consisting of seven males and two hundred and ten females with a female: Male ratio of 1:0.04. Mean age was 26.4 ± 10.0 years, ranging from 10 to 70 years, with 21-30 (94, 43.5%), as the predominant age and less than 21 years (70, 32.4%) as the second common age group. Seventy four percent of (74%) of the breast lesions were benign non proliferative lesions while 26% were proliferative breast lesions. Of the proliferative lesions, five or 8.9% of the proliferative or 2.33% of the lesions were atypical ductal hyperplasia’s which have a high risk of progression to cancer.
Conclusion: Proliferative breast lesions and the premalignant lesions of the breast are not commonly reported in Calabar. An upscale of population screening and mammographic services may improve their yield which will help prevent some invasive breast cancers.