cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Constraining the LyC escape fraction from LEGUS star clusters with SIGNALS HII region observations: A pilot study of NGC 628
Creators: name: Teh, J. W.
name: Grasha, K.
name: Krumholz, M. R.
name: Battisti, A.
name: Calzetti, D.
name: Rousseau-Nepton, L.
name: Rhea, C.
name: Adamo, A.
name: Kennicutt, R. C.
name: Grebel, E. K.
name: Cook, D. O.
name: Combes, F.
name: Messa, M.
name: Linden, S.
name: Klessen, R. S.
name: Vilchez, J. M.
name: Fumagalli, M.
name: McLeod, A. F.
name: Smith, L. J.
name: Chemin, L.
name: Wang, J.
name: Sabbi, E.
name: Sacchi, E.
name: Petric, A.
name: Della Bruna, L.
name: Boselli, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The ionising radiation of young and massive stars is a crucial form of stellar feedback. Most ionising (Lyman-continuum; LyC, $λ< 912A$) photons are absorbed close to the stars that produce them, forming compact HII regions, but some escape into the wider galaxy. Quantifying the fraction of LyC photons that escape is an open problem. In this work, we present a semi-novel method to estimate the escape fraction by combining broadband photometry of star clusters from the Legacy ExtraGalactic UV Survey (LEGUS) with HII regions observed by the Star formation, Ionized gas, and Nebular Abundances Legacy Survey (SIGNALS) in the nearby spiral galaxy NGC 628. We first assess the completeness of the combined catalogue, and find that 49\% of HII regions lack corresponding star clusters as a result of a difference in the sensitivities of the LEGUS and SIGNALS surveys. For HII regions that do have matching clusters, we infer the escape fraction from the difference between the ionising power required to produce the observed HII luminosity and the predicted ionising photon output of their host star clusters; the latter is computed using a combination of LEGUS photometric observations and a stochastic stellar population synthesis code SLUG (Stochastically Lighting Up Galaxies). Overall, we find an escape fraction of $f_{esc} = 0.09^{+0.06}_{-0.06}$ across our sample of 42 HII regions; in particular, we find HII regions with high $f_{esc}$ are predominantly regions with low H$α$-luminosity. We also report possible correlation between $f_{esc}$ and the emission lines [O ii]/[N ii] and [O ii]/H$β$.
description: Accepted for publication at MNRAS
The issue of Indian land claims: Alberta since 1969
Creators: name: Jakab, Cheryl A.
Publisher: name: University of Calgary
Year: 1979
Subjects: subject: E 78 A33 J33 1979 Microfiche
subject: Indians of North America - Alberta - Land tenure
subject: Indians of North America - Alberta - Legal status, Laws, Etc.

description: Bibliography: p. 120-123.
The VISCACHA survey -- VII. Assembly history of the Magellanic Bridge and SMC Wing from star clusters
Creators: name: Oliveira, R. A. P.
name: Maia, F. F. S.
name: Barbuy, B.
name: Dias, B.
name: Santos, J. F. C.
name: Souza, S. O.
name: Kerber, L. O.
name: Bica, E.
name: Sanmartim, D.
name: Quint, B.
name: Fraga, L.
name: Armond, T.
name: Minniti, D.
name: Parisi, M. C.
name: Santrich, O. J. Katime
name: Angelo, M. S.
name: Pérez-Villegas, A.
name: De Bórtoli, B. J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The formation scenario of the Magellanic Bridge during an encounter between the Large and Small Magellanic Clouds $\sim200\,$Myr ago, as proposed by $N$-body models, would be imprinted in the chemical enrichment and kinematics of its stars, and sites of ongoing star formation along its extension. We present an analysis of 33 Bridge star clusters using photometry obtained with the SOAR 4-m telescope equipped with adaptive optics for the VISCACHA survey. We performed a membership selection and derived self-consistent ages, metallicities, distances and reddening values via statistical isochrone fitting, as well as tidal radii and integrated masses from structure analysis. Two groups are clearly detected: 13 well-studied clusters older than the Bridge, with $0.5-6.8\,$Gyr and $\rm{[Fe/H]}<-0.6\,$dex; and 15 clusters with $< 200\,$Myr and $\rm{[Fe/H]}>-0.5\,$dex, probably formed in-situ. The old clusters follow the overall age and metallicity gradients of the SMC, whereas the younger ones are uniformly distributed along the Bridge. The main results are as follows: $(i)$ we derive ages and metallicities for the first time for 9 and 18 clusters, respectively; $(ii)$ we detect two metallicity dips in the age-metallicity relation of the Bridge at $\sim 200\,$Myr and $1.5\,$Gyr ago for the first time, possibly chemical signatures of the formation of the Bridge and Magellanic Stream; $(iii)$ we estimate a minimum stellar mass for the Bridge of $3-5 \times 10^5\,M_\odot$; $(iv)$ we confirm that all the young Bridge clusters at $\rm{RA} < 3^h$ are metal-rich $\rm{[Fe/H]} \sim -0.4\,$dex.
description: 15 pages, 13 figures + appendix. Accepted for publication in MNRAS
Stellar Diameters and Temperatures I. Main Sequence A, F, & G Stars
Creators: name: Boyajian, Tabetha S.
name: McAlister, Harold A.
name: van Belle, Gerard
name: Gies, Douglas R.
name: Brummelaar, Theo A. ten
name: von Braun, Kaspar
name: Farrington, Chris
name: Goldfinger, P. J.
name: O'Brien, David
name: Parks, J. Robert
name: Richardson, Noel D.
name: Ridgway, Stephen
name: Schaefer, Gail
name: Sturmann, Laszlo
name: Sturmann, Judit
name: Touhami, Yamina
name: Turner, Nils H.
name: White, Russel
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have executed a survey of nearby, main sequence A, F, and G-type stars with the CHARA Array, successfully measuring the angular diameters of fortyfour stars with an average precision of ~ 1.5%. We present new measures of the bolometric flux, which in turn leads to an empirical determination of the effective temperature for the stars observed. In addition, these CHARA-determined temperatures, radii, and luminosities are fit to Yonsei-Yale model isochrones to constrain the masses and ages of the stars. These results are compared to indirect estimates of these quantities obtained by collecting photometry of the stars and applying them to model atmospheres and evolutionary isochrones. We find that for most cases, the models overestimate the effective temperature by ~ 1.5-4%, when compared to our directly measured values. The overestimated temperatures and underestimated radii in these works appear to cause an additional offset in the star's surface gravity measurements, which consequently yield higher masses and younger ages, in particular for stars with masses greater than ~1.3 Msun. Additionally, we compare our measurements to a large sample of eclipsing binary stars, and excellent agreement is seen within both data sets. Finally, we present temperature relations with respect to (B-V) and (V-K) color as well as spectral type showing that calibration of effective temperatures with errors ~ 1% is now possible from interferometric angular diameters of stars.
description: 125 pages, 12 tables, 25 figures, accepted for publication in ApJ
Comanche Boys
Creators: name: Honea, Benjamin D.
Publisher: name: University of Kentucky
Year: 2016
Subjects: subject: Literature in English, North America, Ethnic and Cultural Minority
subject: Native American Studies

description: Comanche Boys is a novel that was written and revised during Benjamin Honea’s time at the University of Kentucky. The novel focuses on Brandon, who lives in rural southwest Oklahoma, and how the arrival of two people in his life, one old and one new, changes his future irrevocably. Taking place at the intersections of modern American and Native American life, the narrative explores history, culture, mythology, faith, despair, racism, poverty, vengeance, and justice. The struggles of the past and present, the lost and reclaimed, propel and pervade the lives of the characters.
Measurable bundles of $C^*$-dynamical systems and its applications
Creators: name: Ganiev, Inomjon
name: Mukhamedov, Farrukh
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A35, 17C65, 46L70, 46L52, 28D05

description: In the present paper we investigate $L_0$-valued states and Markov operators on $ C^*$-algebras over $L_0$. In particular, we give representations for $L_0$-valued state and Markov operators on $ C^*$ algebras over $L_0$, respectively, as measurable bundles of states and Markov operators. Moreover, we apply the obtained representations to study certain ergodic properties of $ C^*$-dynamical systems over $L_0$.
A new Lie systems approach to second-order Riccati equations
Creators: name: Cariñena, J. F.
name: de Lucas, J.
name: Sardón, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 34A26 (Primary) 22E60, 34A34 (Secondary)

description: This work presents a newly renovated approach to the analysis of second-order Riccati equations from the point of view of the theory of Lie systems. We show that these equations can be mapped into Lie systems through certain Legendre transforms. This result allows us to construct new superposition rules for studying second-order Riccati equations and to reduce their integration to solving (first-order) Riccati equations.
description: 8 pages
Implementation of algorithms to determine the capacitance sensitivity of interconnect parasitics in the Magic VLSI layout tool
Creators: name: Huang, Nick Kuan-Hsiang
Publisher: name: University of British Columbia
Year: 2009

description: VLSI interconnect capacitance is becoming more signiﬁcant and also increasingly subject to process variation in the deep submicron regime. A new set of capacitance models is implemented in the Magic VLSI layout tool to improve the capacitance accuracy based on 2.5D capacitance models. This involves a new technology ﬁle, equations, and search algorithms. In addition, a simple technique to extract from layout the sensitivity of interconnect parasitic capacitance to linewidth process variation is proposed based on the new capacitance models and implemented in Magic. The derivative of each extracted capacitance with respect to linewidth variation in every level is obtained. Coincident edges in layout result in distinct “shrinking” and “bloating” derivatives. The derivatives therefore form a gradient that may be multiplied by a vector of the variations on each level to give the total expected deviation from nominal capacitance. The gradient allows the process sensitivity of each capacitance to be determined by simply inspecting the netlist. In the end, the impact of process variation is simulated in a crosstalk application to emphasize the necessity of process variation awareness.
Probing Quasar Viewing Angle with the Variability Structure Function
Creators: name: Tang, Ji-Jia
name: Wolf, Christian
name: Tonry, John
name: Lai, Samuel
name: Yong, Suk Yee
name: Steyn, Zachary
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Given the anisotropic emission from quasar accretion discs, their viewing angle affects estimates of the quasar luminosity, black-hole mass and Eddington ratio. Discs appear overluminous when viewed pole-on and underluminous when viewed at high inclination. In radio-quiet quasars, the viewing angle is usually unknown, although spectroscopic indicators have been proposed. Here, we use a recently discovered universality in the variability structure function (SF) of quasar light curves (LCs), where all quasars show the same SF when clocks run in units of orbital timescale. As an offset from the mean relation can be caused by incorrect orbital timescales and thus incorrect luminosities, we correlate these offsets with suggested inclination indicators. We derive SFs from NASA/ATLAS LCs spanning $\sim 6$ years of observation, using a sample of 183 luminous quasars with measured H$β$ lines as well as 753 quasars with CIV and MgII lines. Starting from the proposed orientation indicators, we expect quasars with narrower H$β$ lines and with more blueshifted CIV lines to be viewed more pole-on and thus appear overluminous. In contrast, our SF analysis finds that presumed pole-on discs appear underluminous, consistently for both line indicators. We discuss possible explanations for the behaviour of quasars with highly blueshifted CIV lines irrespective of inclination angle, including dusty outflows that might render the accretion disc underluminous and flatter disc temperature profiles with longer orbital timescales than in thin-disc models but reach no satisfying conclusion.
description: 15 pages, 10 figures, Accepted for publication in MNRAS
The SPLASH Survey: Kinematics of Andromeda's Inner Spheroid
Creators: name: Dorman, Claire E.
name: Guhathakurta, Puragra
name: Fardal, Mark A.
name: Lang, Dustin
name: Geha, Marla C.
name: Howley, Kirsten M.
name: Kalirai, Jason S.
name: Bullock, James S.
name: Cuillandre, Jean-Charles
name: Dalcanton, Julianne J.
name: Gilbert, Karoline M.
name: Seth, Anil C.
name: Tollerud, Erik J.
name: Williams, Benjamin F.
name: Yniguez, Basilio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The combination of large size, high stellar density, high metallicity, and Sersic surface brightness profile of the spheroidal component of the Andromeda galaxy (M31) within R_proj ~ 20 kpc suggest that it is unlike any subcomponent of the Milky Way. In this work we capitalize on our proximity to and external view of M31 to probe the kinematical properties of this "inner spheroid." We employ a Markov chain Monte Carlo (MCMC) analysis of resolved stellar kinematics from Keck/DEIMOS spectra of 5651 red giant branch stars to disentangle M31's inner spheroid from its stellar disk. We measure the mean velocity and dispersion of the spheroid in each of five spatial bins after accounting for a locally cold stellar disk as well as the Giant Southern Stream and associated tidal debris. For the first time, we detect significant spheroid rotation (v_rot ~ 50 km/s) beyond R_proj ~ 5 kpc. The velocity dispersion decreases from about 140 km/s at R_proj = 7 kpc to 120 km/s at R_proj = 14 kpc, consistent to 2 sigma with existing measurements and models. We calculate the probability that a given star is a member of the spheroid and find that the spheroid has a significant presence throughout the spatial extent of our sample. Lastly, we show that the flattening of the spheroid is due to velocity anisotropy in addition to rotation. Though this suggests that the inner spheroid of M31 more closely resembles an elliptical galaxy than a typical spiral galaxy bulge, it should be cautioned that our measurements are much farther out (2 - 14 r_eff) than for the comparison samples.
description: Accepted for publication in ApJ
Maintenance Versus Transmission Deficits: The Effect of Delay on Naming Performance in Aphasia
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2019
Subjects: short-term memory
naming
temporal processing
word retrieval
aphasia

description: © Copyright © 2019 Martin and Dell. We propose that deficits in lexical retrieval can involve difficulty in transmission of activation between processing levels, or difficulty in maintaining activation. In support, we present an investigation of picture naming by persons with aphasia in which the naming response is generated after a 1 s (sec) cue to respond in one condition or a 5 s cue to respond in another. Some individuals did better after 5 s, some did worse after 5 s, and some were not impacted by the delay. It is suggested that better performance after 5 s indicates a transmission deficit and that worse performance after 5 s indicates a maintenance deficit. To support this hypothesis, we adapted the two-step semantic-phonological model of lexical retrieval (Schwartz et al., 2006) so that it can simulate the passage of time and can simulate lesions in transmission (its semantic and phonological connection strength parameters) and/or maintenance (its decay parameter). The naming error patterns after 1 and 5 s for each participant were successfully fit to the model. Persons who did better after 5 s were found to have low connection strength parameters, persons who did worse after 5 s were simulated with an increased decay rate, and persons whose performance did not differ with delay were found to have lesions of both types. Some potential theoretical and clinical implications are discussed.
Anterolateral rotatory instability of the knee: anatomy, biomechanics, and related reconstructions
Creators: name: Kittl, Christoph
Publisher: name: Imperial College London
Year: 2019

description: There are several different factors, why an anterior cruciate ligament (ACL) graft may fail. One reason is missed peripheral injuries, especially on the anterolateral side of the knee, which may be responsible for different grades of instability after ACL rupture. Thus, the aim of this thesis was to investigate the role of the anterolateral structures in restraining knee instability and provide a surgical rationale for extra-articular lateral reconstruction. A cutting study was performed using a six degree of freedom robotic setup. The anterolateral structures were subsequently transected in ACL-intact and ACL deficient knees and the drop in force was analysed. The iliotibial tract was the primary restraint to internal tibial rotation in 30°, 60°, and 90° knee flexion. The ACL presented the main contribution in full extension. In high-grade anterolateral rotatory instability (ALRI), an ACL reconstruction and an additional extra-articular lateral reconstruction may control this instability better than an isolated ACL reconstruction. Furthermore, it will share the load with the intra-articular graft and therefore prevent re-rupture. Cadaveric knees were tested in a muscle loading rig and the length changes of the native anterolateral structures and several extra-articular reconstructions were measured using a suture and a linear variable displacement transducer (LVDT). The Lemaire and the MacIntosh reconstruction, which were guided deep to the lateral collateral ligament (LCL) had preferable length change pattern, being tight in extension and slacken in flexion. The iliotibial tract was the primary restraint to internal tibial rotation and an injury should be expected in high-grade ALRI. Regarding length change pattern of lateral extra-articular reconstructions a Lemaire or MacIntosh reconstruction, guided deep to the LCL should be used.
Secular dynamics of stellar spin driven by planets inside Kozai-Lidov resonance
Creators: name: Lei, Hanlun
name: Gong, Yan-Xiang
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In many exoplanetary systems with `hot Jupiters', it is observed that the spin axes of host stars are highly misaligned to planetary orbital axes. In this study, a possible channel is investigated for producing such a misalignment under a hierarchical three-body system where the evolution of stellar spin is subjected to the gravitational torque induced from the planet inside Kozai--Lidov (KL) resonance. In particular, two special configurations are explored in detail. The first one corresponds to the configuration with planets at KL fixed points, and the second one corresponds to the configurations with planets moving on KL librating cycles. When the planet is located at the KL fixed point, the corresponding Hamiltonian model is of one degree of freedom and there are three branches of libration centres for stellar spin. When the planet is moving on KL cycles, the technique of Poincaré section is taken to reveal global structures of stellar spin in phase space. To understand the complex structures, perturbative treatments are adopted to study rotational dynamics. It shows that analytical structures in phase portraits under the resonant model can agree well with numerical structures arising in Poincaré sections, showing that the complicated dynamics of stellar spin are governed by the primary resonance under the unperturbed Hamiltonian model in combination with the 2:1 (high-order and/or secondary) spin-orbit resonances.
description: 15 pages, 11 figures. Accepted for publication in MNRAS
Delineation of tumor migration paths by using a bayesian biogeographic approach
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2019
Subjects: biogeography
cancer
dispersal
metastasis
migration paths
tumor

description: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. Understanding tumor progression and metastatic potential are important in cancer biology. Metastasis is the migration and colonization of clones in secondary tissues. Here, we posit that clone migration events between tumors resemble the dispersal of individuals between distinct geographic regions. This similarity makes Bayesian biogeographic analysis suitable for inferring cancer cell migration paths. We evaluated the accuracy of a Bayesian biogeography method (BBM) in inferring metastatic patterns and compared it with the accuracy of a parsimony-based approach (metastatic and clonal history integrative analysis, MACHINA) that has been specifically developed to infer clone migration patterns among tumors. We used computer-simulated datasets in which simple to complex migration patterns were modeled. BBM and MACHINA were effective in reliably reconstructing simple migration patterns from primary tumors to metastases. However, both of them exhibited a limited ability to accurately infer complex migration paths that involve the migration of clones from one metastatic tumor to another and from metastasis to the primary tumor. Therefore, advanced computational methods are still needed for the biologically realistic tracing of migration paths and to assess the relative preponderance of different types of seeding and reseeding events during cancer progression in patients.
The broadening of the main sequence in the open cluster M38
Creators: name: Griggio, M.
name: Salaris, M.
name: Bedin, L. R.
name: Cassisi, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Our recent multi-band photometric study of the colour width of the lower main sequence of the open cluster M37 has revealed the presence of a sizeable initial chemical composition spread in the cluster. If initial chemical composition spreads are common amongst open clusters, this would have major implications for cluster formation models and the foundation of the chemical tagging technique. Here we present a study of the unevolved main sequence of the open cluster M38, employing Gaia DR3 photometry and astrometry, together with newly acquired Sloan photometry. We have analysed the distribution of the cluster's lower main sequence stars with a differential colour-colour diagram made of combinations of Gaia and Sloan magnitudes, like in the study of M37. We employed synthetic stellar populations to reproduce the observed trend of M38 stars in this diagram, and found that the observed colour spreads can be explained simply by the combined effect of differential reddening across the face of the cluster and the presence of unresolved binaries. There is no need to include in the synthetic sample a spread of initial chemical composition as instead necessary to explain the main sequence of M37. Further photometric investigations like ours, as well as accurate differential spectroscopic analyses on large samples of open clusters, are necessary to understand whether chemical abundance spreads are common among the open cluster population.
description: 8 pages, 10 figures. Accepted for publication in MNRAS on 2023, June 07
Emulating optical cycling centers in polyatomic molecules
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2019
Subjects: physics.chem-ph
physics.atom-ph
quant-ph

description: © 2019, The Author(s). An optical cycling center (OCC) is a recently coined term to indicate two electronic states within a complex quantum object that can repeatedly experience optical laser excitation and spontaneous decay, while being well isolated from its environment. Here we present a quantitative understanding of electronic, vibrational, and rotational excitations of the polyatomic SrOH molecule, which possesses a localized OCC near its Sr atom. In particular, we describe the vibrationally dependent trends in the Franck–Condon factors of the bending and stretching modes of the molecular electronic states coupled in the optical transition. These simulations required us to perform electronic structure calculations of the multi-dimensional potential energy surfaces of both ground and excited states, the determination of vibrational and bending modes, and corresponding Franck–Condon factors. We also discuss the extent to which the optical cycling center has diagonal Franck–Condon factors.
The Role of Multiplicity in Disk Evolution and Planet Formation
Creators: name: Kraus, Adam L.
name: Ireland, Michael J.
name: Hillenbrand, Lynne A.
name: Martinache, Frantz
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The past decade has seen a revolution in our understanding of protoplanetary disk evolution and planet formation in single star systems. However, the majority of solar-type stars form in binary systems, so the impact of binary companions on protoplanetary disks is an important element in our understanding of planet formation. We have compiled a combined multiplicity/disk census of Taurus-Auriga, plus a restricted sample of close binaries in other regions, in order to explore the role of multiplicity in disk evolution. Our results imply that the tidal influence of a close (<40 AU) binary companion significantly hastens the process of protoplanetary disk dispersal, as ~2/3 of all close binaries promptly disperse their disks within <1 Myr after formation. However, prompt disk dispersal only occurs for a small fraction of wide binaries and single stars, with ~80%-90% retaining their disks for at least ~2--3 Myr (but rarely for more than ~5 Myr). Our new constraints on the disk clearing timescale have significant implications for giant planet formation; most single stars have 3--5 Myr within which to form giant planets, whereas most close binary systems would have to form giant planets within <1 Myr. If core accretion is the primary mode for giant planet formation, then gas giants in close binaries should be rare. Conversely, since almost all single stars have a similar period of time within which to form gas giants, their relative rarity in RV surveys indicates either that the giant planet formation timescale is very well-matched to the disk dispersal timescale or that features beyond the disk lifetime set the likelihood of giant planet formation.
description: Accepted to ApJ; 15 pages, 3 figures, 3 tables in emulateapj format
Examining the impact of medical legal partnerships in improving outcomes on the HIV care continuum: Rationale, design and methods
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2019
Subjects: Medical legal partnerships
HIV care continuum
Institutional case study
Intervention mapping legal epidemiology

description: © 2019 The Author(s). Background: Over the past two decades, we have seen a nationwide increase in the use of medical-legal partnerships (MLPs) to address health disparities affecting vulnerable populations. These partnerships increase medical teams' capacity to address social and environmental threats to patients' health, such as unsafe housing conditions, through partnership with legal professionals. Despite expansions in the use of MLP care models in health care settings, the health outcomes efficacy of MLPs has yet to be examined, particularly for complex chronic conditions such as HIV. Methods: This on-going mixed-methods study utilizes institutional case study and intervention mapping methodologies to develop an HIV-specific medical legal partnership logic model. Up-to-date, the organizational qualitative data has been collected. The next steps of this study consists of: (1) recruitment of 100 MLP providers through a national survey of clinics, community-based organizations, and hospitals; (2) in-depth interviewing of 50 dyads of MLP service providers and clients living with HIV to gauge the potential large-scale impact of legal partnerships on addressing the unmet needs of this population; and, (3) the development of an MLP intervention model to improve HIV care continuum outcomes using intervention mapping. Discussion: The proposed study is highly significant because it targets a vulnerable population, PLWHA, and consists of formative and developmental work to investigate the impact of MLPs on health, legal, and psychosocial outcomes within this population. MLPs offer an integrated approach to healthcare delivery that seems promising for meeting the needs of PLWHA, but has yet to be rigorously assessed within this population.
DNS of vertical plane channel flow with finite-size particles: Voronoi analysis, acceleration statistics and particle-conditioned averaging
Creators: name: Garcia-Villalba, Manuel
name: Kidanemariam, Aman G.
name: Uhlmann, Markus
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We have performed a direct numerical simulation of dilute turbulent particulate flow in a vertical plane channel, fully resolving the phase interfaces. The flow conditions are the same as those in the main case of "Uhlmann, M., Phys. Fluids, vol. 20, 2008, 053305", with the exception of the computational domain length which has been doubled in the present study. The statistics of flow and particle motion are not significantly altered by the elongation of the domain. The large-scale columnar-like structures which had previously been identified do persist and they are still only marginally decorrelated in the prolonged domain. Voronoi analysis of the spatial particle distribution shows that the state of the dispersed phase can be characterized as slightly more ordered than random tending towards a homogeneous spatial distribution. It is also found that the p.d.f.'s of Lagrangian particle accelerations for wall-normal and spanwise directions follow a lognormal distribution as observed in previous experiments of homogeneous flows. The streamwise component deviates from this law presenting significant skewness. Finally, a statistical analysis of the flow in the near field around the particles reveals that particle wakes present two regions, a near wake where the velocity deficit decays as 1/x and a far wake with a decay of approximately 1/(x*x).
description: accepted for publication in Int. J. Multiphase Flow
Temporal conditioning of an auditory response: implications for backward and simultaneous masking
Creators: name: Collins, Jean P.
Publisher: name: University of Calgary
Year: 1974
Subjects: subject: BF 319.5 O6 C65 1974 Microfiche
subject: Operant conditioning
subject: Conditioned response
subject: Operant behavior
subject: Stimulus satiation
subject: Behaviorism (Psychology)

description: Bibliography: p. 149-154.
Revisiting the cycle-rotation connection for late-type stars
Creators: name: Mittag, M.
name: Schmitt, J. H. M. M.
name: Schröder, K. -P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyse the relation between the activity cycle length and the Rossby number and collected a sample of 44 main sequence stars with well-known activity cycle periods and rotation periods. We find a linear behaviour in the double-logarithmic relation between the Rossby number and cycle period. The bifurcation into a long and a short period branch is clearly real but it depends, empirically, on the colour index B-V, indicating a physical dependence on effective temperature and position on the main sequence. Furthermore, there is also a correlation between cycle length and convective turnover time with the relative depth of the convection zone. Based on this, we derive empirical relations between cycle period and Rossby number, and for the short period cycle branch relations, we estimate a scatter of the relative deviation between 14% and 28% on the long-period cycle branch. With these relations, we obtain a good match with the 10.3 yr period for the well known 11-year solar Schwabe cycle and a long-period branch value of 104 yr for the Gleissberg cycle of the Sun. Finally, we suggest that the cycles on the short-period branch appear to be generated in the deeper layers of the convective zone, while long-period branch cycles seem to be related to fewer deep layers in that zone. We show that for a broader B-V range, the Rossby number is a more suitable parameter for universal relation with cycle-rotation than just the rotation period alone. As proof, we demonstrate that our empirical stellar relations are consistent with the 11-year solar Schwabe cycle, in contrast to earlier studies using just the rotation period in their relations. Previous studies have tried to explain the cycle position of the Sun in the cycle-rotation presentation via other kinds of dynamo, however, in our study, no evidence is found that would suggest another type of dynamo for the Sun and other stars.
description: 18 pages, 18 figures, accepted for publication in A&A
Electron transfer and ionic displacements at the origin of the 2D electron gas at the LAO/STO interface: Direct measurements with atomic-column spatial resolution
Creators: name: Cantoni, C.
name: Gazquez, J.
name: Granozio, F. Miletto
name: Oxley, M. P.
name: Varela, M.
name: Lupini, A. R.
name: Pennycook, S. J.
name: Aruta, C.
name: di Uccio, U. Scotti
name: Perna, P.
name: Maccariello, D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The discovery that the interface between two band gap insulators LaAlO3 and SrTiO3 is highly conducting has raised an enormous interest in the field of oxide electronics. The LAlO3/SrTiO3 interface can be tuned using an electric field and switched from a superconducting to an insulating state. Conducting paths in an insulating background can be written applying a voltage with the tip of an atomic force microscope, creating great promise for the development of a new generation of nanoscale electronic devices. However, the mechanism for interface conductivity in LaAlO3/SrTiO3 has remained elusive. The theoretical explanation based on an intrinsic charge transfer (electronic reconstruction) has been strongly challenged by alternative descriptions based on point defects. In this work, thanks to modern aberration-corrected electron probes with atomic-scale spatial resolution, interfacial charge and atomic displacements originating the electric field within the system can be simultaneously measured, yielding unprecedented experimental evidence in favor of an intrinsic electronic reconstruction.
description: Accepted for publication in Advanced Materials. Published online on 06/20/2012
The Use of Gesture in Self-Initiated Self-Repair Sequences by Persons with Non-Fluent Aphasia
Creators: name: Fletner, Eleanor M.
Publisher: name: University of Kentucky
Year: 2016
Subjects: subject: Applied Linguistics
subject: Computational Linguistics
subject: Discourse and Text Linguistics
subject: Speech and Hearing Science
subject: Speech Pathology and Audiology

description: This study examines the relationship between types of gestures and instances of self-initiated self-repair (SISR) used by persons with non-fluent aphasia (NFA), which is a type of aphasia characterized by stilted speech or signing (Papathanasiou et al., 2013), in interactions with clinicians. Conversation repairs in this study are assessed using the framework of Conversation Analysis (CA), which is an approach for describing, analyzing, and understanding social interaction (Sidnell, 2010). Previous linguistic studies have demonstrated a distinct preference for the use of gesture during a repair by persons with aphasia (Goodwin, 1995; Klippi, 2015; Wilkinson, 2013). This study draws more conclusive generalizations than previous studies about the types of gesture used in successful and unsuccessful SISR by persons with NFA through the use of the AphasiaBank corpus. Results show that there does not appear to be a connection between the overall frequencies of gesture used by persons with NFA during a phase of the repair mechanism as compared to other phases in the repair mechanism. Additionally, there is a slight tendency in this dataset for persons with NFA to have more successful repairs when they use gesture during the initiation and reparable portions of the repair mechanism.
МОРФОМЕТРИЧЕСКИЕ ИЗМЕНЕНИЯ ЭЛЕМЕНТОВ КОЛЕННОГО СУСТАВА ПОД ВЛИЯНИЕМ ЭКСПЕРИМЕНТАЛЬНОГО ГИПОТИРЕОЗА
Creators: name: Эшонқулова, Б.Д.
name: Миршарапов, У.М.
name: Хусанова, Э.С.
Publisher: name: Zenodo
Year: 2023

description: Гипофункция щитовидной железы, а точнее наличие в крови тироидного гормона в низкой концентрации приводит к тому, что обмен веществ в организме выходит из-под контроля, вследствие чего развиваются различной степени патологические изменения. Гипофункция щитовидной железы возникает в связи с несколькими факторами: травма железы, опухолевые или кистозные заболевания, нарушения гипофизо-гипоталамической системы, дефектами развития железа, ошибками хирургического вмешательства, длительным применением тиреостатиков и др. Ситуация с гипотиреозом является одной из самых распространенных среди населения, дефицит йода является для нашей страны региональным.
Essays in economic measurement with application to Japan
Creators: name: Mizobuchi, Hideyuki
Publisher: name: University of British Columbia
Year: 2009

description: The objective of this dissertation is to improve our understanding of economic measurement, in particular, index number theory and its application to the Japanese economy. Two different approaches exist in index number theory: the first decomposes a value ratio of costs or profits into the product of a price index times a quantity index.　　The second approach decomposes a value difference in costs or profits into the sum of a price indicator plus a quantity indicator. 　This thesis will examine both approaches. Following the ratio approach, our first essay will investigate the origins of the growth of the Japanese standard of living. This growth is attributed to technical progress, changes in output prices and input quantities. In many ways, improvements in the terms of trade are synonymous with technical progress, because they make it possible to obtain more for less. We compare two distinct impacts of changes in the terms of trade and technical progress on the Japanese standard of living, and will show that while technical progress made the most contribution, the impact of the changes in the terms of trade were negligible. The second and third essays follow the difference approach in index number theory. The second essay deals with the producer model and proposes a productivity analysis based on the difference approach in index number theory. We show that following the difference approach, change in real income per unit primary input can be additively decomposed into explanatory factors such as technical progress, changes in relative output prices and deflated input quantities. The third essay deals with the consumer model, introducing the concept of the exact and superlative indicator into the difference approach; we will show that the Bennet indicator is an exact and superlative indicator. The second essay applies the new decomposition result to the Japanese market sector for the years 1955–2006. The third essay uses Japanese aggregate consumption data and compares different real expenditures based on various distinct indexes and indicators.
Interface superconductivity: History, development and prospects
Creators: name: Pereiro, Juan
name: Petrovic, Alexander
name: Panagopoulos, Christos
name: Božović, Ivan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The concept of interface superconductivity was introduced over 50 years ago. Some of the greatest physicists of that time wondered whether a quasi-two-dimensional (2D) superconductor can actually exist, what are the peculiarities of 2D superconductivity, and how does the reduced dimensionality affect the critical temperature (Tc). The discovery of high-temperature superconductors, which are composed of coupled 2D superconducting layers, further increased the interest in reduced dimensionality structures. In parallel, the advances in experimental techniques made it possible to grow epitaxial 2D structures with atomically flat surfaces and interfaces, enabling some of the experiments that were proposed decades ago to be performed finally. Now we know that interface superconductivity can occur at the junction of two different materials (metals, insulators, semiconductors). This phenomenon is being explored intensely; it is also exploited as a means to increase Tc or to study quantum critical phenomena. This research may or may not produce a superconductor with a higher Tc or a useful superconducting electronic device but it will likely bring in new insights into the physics underlying high-temperature superconductivity.
description: http://www.simplex-academic-publishers.com/abstracts/106637257.aspx
Accretion in the Binary System GG Carinae and Implications for B[e] Supergiants
Creators: name: Kashi, Amit
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We simulate the hydrodynamics of the wind flow in the B[e] supergiant binary system GG~Carinae and obtain the mass accretion rate onto the secondary and the observed lightcurve. We find an inhomogeneous Bondi-Hoyle-Lyttleton accretion into a curved accretion tail, and confirm that the accretion rate is modulated along the orbit, with a maximum close to periastron. We show that the accretion itself cannot account for the periodical variation in brightness. Instead, we explain the observed variation in the light curve with absorption by the accretion tail. Our results are in general agreement with previously derived stellar masses, orbital parameters, and the system orientation, but imply that the B[e] supergiant is more luminous. We find an effect related to the orbital motion of the two stars, in which the accretion tail is cut by the primary and we term it the Lizard Autotomy Effect. As part of the effect, the primary is self accreting wind that it ejected earlier. The Lizard Autotomy Effect creates an outwardly expanding spiral shell made up of broken segments. We suggest that such a tail exists in other B[e] supergiant systems and can be the source of the circumstellar material observed in such systems. The accretion also forms a disc around the secondary near periastron that later vanishes. We suggest that the formation of such a disc can launch jets that account for the bipolar structure observed around some B[e] supergiants.
description: Accepted for publication in MNRAS
Discovery of Magnetospheric Interactions in the Doubly-Magnetic Hot Binary $ε$ Lupi
Creators: name: Biswas, Ayan
name: Das, Barnali
name: Chandra, Poonam
name: Wade, Gregg A.
name: Shultz, Matthew E.
name: Cavallaro, Francesco
name: Petit, Veronique
name: Woudt, Patrick A.
name: Alecian, Evelyne
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Magnetic fields are extremely rare in close, hot binaries, with only 1.5\% of such systems known to contain a magnetic star. The eccentric $ε$ Lupi system stands out in this population as the only close binary in which both stars are known to be magnetic. We report the discovery of strong, variable radio emission from $ε$ Lupi using the upgraded Giant Metrewave Radio Telescope (uGMRT) and the MeerKAT radio telescope.The light curve exhibits striking, unique characteristics including sharp, high-amplitude pulses that repeat with the orbital period, with the brightest enhancement occurring near periastron. The characteristics of the light curve point to variable levels of magnetic reconnection throughout the orbital cycle, making $ε$ Lupi the first known high-mass, main sequence binary embedded in an interacting magnetosphere. We also present a previously unreported enhancement in the X-ray light curve obtained from archival XMM-Newton data. The stability of the components' fossil magnetic fields, the firm characterization of their relatively simple configurations, and the short orbital period of the system make $ε$ Lupi an ideal target to study the physics of magnetospheric interactions. This system may thus help us to illuminate the exotic plasma physics of other magnetically interacting systems such as moon-planet, planet-star, and star-star systems including T Tauri binaries, RS CVn systems, and neutron star binaries.
description: Accepted for publication in MNRAS, 16 pages, 12 figures
Atmospheric Recyling of Volatiles by Pebble-Accreting Planets
Creators: name: Wang, Yu
name: Ormel, Chris W.
name: Huang, Pinghui
name: Kuiper, Rolf
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Planets, embedded in their natal discs, harbour hot envelopes. When pebbles are accreted by these planets, the contained volatile components may sublimate, enriching the envelope and potentially changing its thermodynamical properties. However, the envelopes of embedded planets actively exchange material with the disc, which would limit the buildup of a vapour-rich atmosphere. To properly investigate these processes, we have developed a new phase change module to treat the sublimation process with hydrodynamical simultions. Combined with the recently developed multi-dust fluid approach, we conduct 2D self-consistent hydrodynamic simulations to study how pebble sublimation influences the water content of super-Earths and sub-Neptunes. We find the extent and the amount of vapour that a planet is able to hold on to is determined by the relative size of the sublimation front and the atmosphere. When the sublimation front lies far inside the atmosphere, vapour tends to be locked deep in the atmosphere and keeps accumulating through a positive feedback mechanism. On the other hand, when the sublimation front exceeds the (bound) atmosphere, the ice component of incoming pebbles can be fully recycled and the vapour content reaches a low, steady value. Low disc temperature, small planet mass and high pebble flux (omitting accretion heating by pebbles) render the planet atmosphere vapour-rich while the reverse changes render it vapour-poor. The phase change module introduced here can in future studies also be employed to model the chemical composition of the gas in the vicinity of accreting planets and around snowlines.
description: 21 pages, 16 figures. Accepted for publication in MNRAS on June 5th 2023