bluuebunny/crossref_metadata_2025_split huggingface dataset:
MODELING THE PERFORMANCE OF THE LSST IN SURVEYING THE NEAR-EARTH OBJECT POPULATION
Authors: Grav T. , Mainzer A. K. , Spahr T. 
Published: June 2016

ABSTRACT
We have performed a detailed survey simulation of the LSST performance with regards to near-Earth objects (NEOs) using the project’s current baseline cadence. The survey shows that if the project is able to reliably generate linked sets of positions and times (a so-called “tracklet”) using two detections of a given object per night and can link these tracklets into a track with a minimum of three tracklets covering more than a ∼12 day length-of-arc, then they would be able to discover 62% of the potentially hazardous asteroids (PHAs) larger than 140 m in its projected 10 year survey lifetime. This completeness would be reduced to 58% if the project is unable to implement a pipeline using the two detection cadence and has to adopt the four detection cadence more commonly used by existing NEO surveys. When including the estimated performance from the current operating surveys, assuming these would continue running until the start of LSST and perhaps beyond, the completeness fraction for PHAs larger than 140 m would be 73% for the baseline cadence and 71% for the four detection cadence. This result is a lower completeness than the estimate of Ivezić et al.; however, the result is quite close to that of Jones et al., who show ∼70% completeness using the identical survey cadence as used here. We show that the traditional method of using absolute magnitude

H
<
22

mag as a proxy for the population with diameters larger than 140 m results in completeness values that are too high by ∼5%. Our simulation makes use of the most recent models of the physical and orbital properties of the NEO and PHA populations, as well as simulated cadences and telescope performance estimates provided by the LSST project. The consistency of the results presented here when compared to those of Jones et al. demonstrates the robustness of these survey modeling approaches. We also show that while neither LSST nor a space-based IR platform like NEOCam individually can complete the survey for 140 m diameter NEOs, the combination of these systems can achieve that goal after a decade of observation.
SIGNATURES OF GRAVITATIONAL INSTABILITY IN RESOLVED IMAGES OF PROTOSTELLAR DISKS
Authors: Dong (董若冰) Ruobing , Vorobyov Eduard , Pavlyuchenkov Yaroslav , Chiang (蔣詒曾) Eugene , Liu (呂浩宇) Hauyu Baobab 
Published: June 2016

ABSTRACT
Protostellar (class 0/I) disks, which have masses comparable to those of their nascent host stars and are fed continuously from their natal infalling envelopes, are prone to gravitational instability (GI). Motivated by advances in near-infrared (NIR) adaptive optics imaging and millimeter-wave interferometry, we explore the observational signatures of GI in disks using hydrodynamical and Monte Carlo radiative transfer simulations to synthesize NIR scattered light images and millimeter dust continuum maps. Spiral arms induced by GI, located at disk radii of hundreds of astronomical units, are local overdensities and have their photospheres displaced to higher altitudes above the disk midplane; therefore, arms scatter more NIR light from their central stars than inter-arm regions, and are detectable at distances up to 1 kpc by Gemini/GPI, VLT/SPHERE, and Subaru/HiCIAO/SCExAO. In contrast, collapsed clumps formed by disk fragmentation have such strong local gravitational fields that their scattering photospheres are at lower altitudes; such fragments appear fainter than their surroundings in NIR scattered light. Spiral arms and streamers recently imaged in four FU Ori systems at NIR wavelengths resemble GI-induced structures and support the interpretation that FUors are gravitationally unstable protostellar disks. At millimeter wavelengths, both spirals and clumps appear brighter in thermal emission than the ambient disk and can be detected by ALMA at distances up to 0.4 kpc with one hour integration times at ∼0.″1 resolution. Collapsed fragments having masses ≳1 M
J can be detected by ALMA within ∼10 minutes.
ABOVE-THE-LOOP-TOP OSCILLATION AND QUASI-PERIODIC CORONAL WAVE GENERATION IN SOLAR FLARES
Authors: Takasao Shinsuke , Shibata Kazunari 
Published: June 2016

ABSTRACT
Observations revealed that various kinds of oscillations are excited in solar flare regions. Quasi-periodic pulsations (QPPs) in flare emissions are commonly observed in a wide range of wavelengths. Recent observations have found that fast-mode magnetohydrodynamic (MHD) waves are quasi-periodically emitted from some flaring sites (quasi-periodic propagating fast-mode magnetoacoustic waves; QPFs). Both QPPs and QPFs imply a cyclic disturbance originating from the flaring sites. However, the physical mechanisms remain puzzling. By performing a set of two-dimensional MHD simulations of a solar flare, we discovered the local oscillation above the loops filled with evaporated plasma (above-the-loop-top region) and the generation of QPFs from such oscillating regions. Unlike all previous models for QPFs, our model includes essential physics for solar flares such as magnetic reconnection, heat conduction, and chromospheric evaporation. We revealed that QPFs can be spontaneously excited by the above-the-loop-top oscillation. We found that this oscillation is controlled by the backflow of the reconnection outflow. The new model revealed that flare loops and the above-the-loop-top region are full of shocks and waves, which is different from the previous expectations based on a standard flare model and previous simulations. In this paper, we show the QPF generation process based on our new picture of flare loops and will briefly discuss a possible relationship between QPFs and QPPs. Our findings will change the current view of solar flares to a new view in which they are a very dynamic phenomenon full of shocks and waves.
THE FIRST DETECTION OF PHOTOMETRIC VARIABILITY IN A Y DWARF: WISE J140518.39+553421.3
Authors: Cushing Michael C. , Hardegree-Ullman Kevin K. , Trucks Jesica L. , Morley Caroline V. , Gizis John E. , Marley Mark S. , Fortney Jonathan J. , Kirkpatrick J. Davy , Gelino Christopher R. , Mace Gregory N. , Carey Sean J. 
Published: June 2016

ABSTRACT
We present the first detection of the photometric variability in a spectroscopically confirmed Y dwarf. The Infrared Array Camera on board the Spitzer Space Telescope was used to obtain time series photometry of WISE J140518.39+553421.3 at 3.6 and 4.5 μm over a 24-hr period at two different epochs separated by 149 days. Variability is evident at 4.5 μm in the first epoch and at 3.6 and 4.5 μm in the second epoch, which suggests that the underlying cause or causes of this variability change on the timescales of months. The second-epoch [3.6] and [4.5] light curves are nearly sinusoidal in form, in phase, have periods of roughly 8.5 hr, and have semi-amplitudes of 3.5%. We find that a simple geometric spot model with a single bright spot reproduces these observations well. We also compare our measured semi-amplitudes of the second-epoch light curves to predictions of the static, one-dimensional, partly cloudy, and hot spot models of Morley and collaborators, and find that neither set of models can reproduce the observed [3.6] and [4.5] semi-amplitudes simultaneously. Therefore, more advanced two-dimensional or three-dimensional models that include time-dependent phenomena like vertical mixing, cloud formation, and thermal relaxation are sorely needed in order to properly interpret our observations.
MODELING THE MULTI-BAND AFTERGLOW OF GRB 130831A: EVIDENCE FOR A SPINNING-DOWN MAGNETAR DOMINATED BY GRAVITATIONAL WAVE LOSSES?
Authors: Zhang Q. , Huang Y. F. , Zong H. S. 
Published: June 2016

ABSTRACT
The X-ray afterglow of GRB 130831A shows an “internal plateau” with a decay slope of ∼0.8, followed by a steep drop at around 105 s with a slope of ∼6. After the drop, the X-ray afterglow continues with a much shallower decay. The optical afterglow exhibits two segments of plateaus separated by a luminous optical flare, followed by a normal decay with a slope basically consistent with that of the late-time X-ray afterglow. The decay of the internal X-ray plateau is much steeper than what we expect in the simplest magnetar model. We propose a scenario in which the magnetar undergoes gravitational-wave-driven r-mode instability, and the spin-down is dominated by gravitational wave losses up to the end of the steep plateau, so that such a relatively steep plateau can be interpreted as the internal emission of the magnetar wind and the sharp drop can be produced when the magnetar collapses into a black hole. This scenario also predicts an initial X-ray plateau lasting for hundreds of seconds with an approximately constant flux which is compatible with observation. Assuming that the magnetar wind has a negligible contribution in the optical band, we interpret the optical afterglow as the forward shock emission by invoking the energy injection from a continuously refreshed shock following the prompt emission phase. It is shown that our model can basically describe the temporal evolution of the multi-band afterglow of GRB 130831A.
AN ALMA SEARCH FOR SUBSTRUCTURE, FRAGMENTATION, AND HIDDEN PROTOSTARS IN STARLESS CORES IN CHAMAELEON I
Authors: Dunham Michael M. , Offner Stella S. R. , Pineda Jaime E. , Bourke Tyler L. , Tobin John J. , Arce Héctor G. , Chen Xuepeng , Francesco James Di , Johnstone Doug , Lee Katherine I. , Myers Philip C. , Price Daniel , Sadavoy Sarah I. , Schnee Scott 
Published: June 2016

ABSTRACT
We present an Atacama Large Millimeter/submillimeter Array (ALMA) 106 GHz (Band 3) continuum survey of the complete population of dense cores in the Chamaeleon I molecular cloud. We detect a total of 24 continuum sources in 19 different target fields. All previously known Class 0 and Class I protostars in Chamaeleon I are detected, whereas all of the 56 starless cores in our sample are undetected. We show that the Spitzer+Herschel census of protostars in Chamaeleon I is complete, with the rate at which protostellar cores have been misclassified as starless cores calculated as <1/56, or <2%. We use synthetic observations to show that starless cores collapsing following the turbulent fragmentation scenario are detectable by our ALMA observations when their central densities exceed ∼108 cm−3, with the exact density dependent on the viewing geometry. Bonnor–Ebert spheres, on the other hand, remain undetected to central densities at least as high as 1010 cm−3. Our starless core non-detections are used to infer that either the star-formation rate is declining in Chamaeleon I and most of the starless cores are not collapsing, matching the findings of previous studies, or that the evolution of starless cores are more accurately described by models that develop less substructure than predicted by the turbulent fragmentation scenario, such as Bonnor–Ebert spheres. We outline future work necessary to distinguish between these two possibilities.
VARIABILITY-INDUCED MOTION IN KEPLER DATA
Authors: Makarov Valeri V. , Goldin Alexey 
Published: June 2016

ABSTRACT
Variability-induced motion (VIM) is an observable effect in simultaneous astrometric and photometric measurements caused by brightness variation in one of the components of a double source or blended image, which manifests itself as a strongly correlated shift of the optical photocenter. We have processed the entire collection of Kepler long-cadence light curve data, looking for correlated signals in astrometry and photometry on the time basis of a quarter-year. Limiting the VIM correlation coefficient to 0.3, VIM events are detected for 129,525 Kepler stars in at least one quarter. Of 7305 Kepler objects of interest, 4440 are detected as VIM at least once. Known variable stars and resolved double stars have elevated rates of VIM detection. Confident VIM occurrences are found for stars with suggested superflare events, indicating possible signal contamination. We present a complete catalog of all quarterly VIM detections. This catalog should be checked for such astrophysically significant events as transits of exoplanets, new eclipsing stars, and superflares of solar-type stars.
A PRECISE DETERMINATION OF THE MID-INFRARED INTERSTELLAR EXTINCTION LAW BASED ON THE APOGEE SPECTROSCOPIC SURVEY
Authors: Xue Mengyao , Jiang B. W. , Gao Jian , Liu Jiaming , Wang Shu , Li Aigen 
Published: June 2016

ABSTRACT
A precise measure of the mid-infrared interstellar extinction law is crucial for investigating the properties of interstellar dust, especially larger-sized grains. Based on the stellar parameters derived from the SDSS-III/Apache Point Observatory Galaxy Evolution Experiment (APOGEE) spectroscopic survey, we select a large sample of G-type and K-type giants as the tracers of the Galactic mid-infrared extinction. We calculate the intrinsic stellar color excesses from the stellar effective temperatures and use them to determine the mid-infrared extinction for a given line of sight. For the entire sky of the Milky Way surveyed by APOGEE, we derive the extinctions (relative to

, the K
S-band extinction at wavelength λ = 2.16 μm) for the four Wide-field Infrared Survey Explorer (WISE) bands at 3.4, 4.6, 12, and 22 μm, the four Spitzer/Infrared Array Camera bands at 3.6, 4.5, 5.8, and 8 μm, the Spitzer/MIPS24 band at 23.7 μm, and, for the first time, the AKARI/S9W band at 8.23 μm. Our results agree with previous works in that the extinction curve is flat in the ∼3–8 μm wavelength range and is generally consistent with the

= 5.5 model curve, except our determination exceeds the model prediction in the WISE/W4 band. Although some previous works found that the mid-IR extinction law appears to vary with the extinction depth

, no noticeable variation has been found in this work. The uncertainties are analyzed in terms of the bootstrap resampling method and Monte-Carlo simulation and are found to be rather small.
Predictors of Loss of Remission and Disease Flares in Patients with Axial Spondyloarthritis Receiving Antitumor Necrosis Factor Treatment: A Retrospective Study
Authors: Lubrano Ennio , Massimo Perrotta Fabio , Manara Maria , D’Angelo Salvatore , Addimanda Olga , Ramonda Roberta , Punzi Leonardo , Olivieri Ignazio , Salvarani Carlo , Marchesoni Antonio 
Published: June 2016

Objective.The aim of this study was to evaluate rate and predictive factors of loss of remission and disease flare in patients with axial spondyloarthritis (axSpA) receiving antitumor necrosis factor (anti-TNF) treatment.Methods.In this retrospective multicenter study, patients with axSpA, according to the Assessment of Spondyloarthritis international Society (ASAS) criteria, treated with adalimumab, etanercept, or infliximab with a minimum followup of 12 months and satisfying the ASAS partial remission criteria and/or Ankylosing Spondylitis Disease Activity Score (ASDAS) inactive disease were studied. Disease flare was defined as a Bath Ankylosing Spondylitis Disease Activity Index score > 4.5 or ASDAS score > 2.5 on at least 1 occasion.Results.One hundred seventy-four patients with axSpA were studied. After a median [interquartile range (IQR)] followup of 4 years (2–6), 37 patients (21.2%) experienced a loss of remission and 28 (16.1% of the whole study group) a disease flare. Median (IQR) duration of remission in patients who lost this status was 1 year (0.625–2). Higher median erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) values, continuous nonsteroidal antiinflammatory drug (NSAID) use, and an ASDAS-CRP ≥ 0.8 during the remission period were significantly associated with both loss of remission and disease flare. At the multivariate analysis, continuous NSAID intake (OR 4.05, 95% CI 1.4–11.74, p = 0.010) and ESR > 15 (OR 2.90, 95% CI 1.23–6.82, p = 0.015) were the only factors predictive of disease reactivation.Conclusion.In this study, loss of remission and disease flares occurred, respectively, in about 21% and 16% of the patients with axSpA who achieved a state of remission while receiving anti-TNF therapy. Residual disease activity was associated with disease reactivation.
Les premiers voyageurs à Messène : de Cyriaque d’Ancône à l’expédition de Morée
Authors: Moret Pierre , Zambon Alessia 
Published: June 2016

Cet article réévalue la place occupée par Messène dans les itinéraires péloponnésiens des premiers voyageurs européens, avant les fouilles et les relevés de l’expédition scientifique de Morée (1829), et fait le point sur leur contribution à la connaissance du site archéologique et de ses vestiges. Une vingtaine de visites ont été recensées, entre 1447 et 1828, impliquant dix-sept Britanniques, onze Français, cinq Allemands, un Italien et un Danois. L’accent est mis sur les représentations graphiques, souvent inédites, qui accompagnent les récits de plusieurs d’entre eux.
L’ hérôon de Trokondas à Kitanaura, une contribution à l’histoire politique, sociale et culturelle de la Pisidie aux époques hellénistique et romaine
Authors: Pimouguet-Pédarros Isabelle 
Published: June 2016

La cité de Kitanaura, connue pour avoir été intégrée au territoire de Termessos de Pisidie au plus tard au i er s. de n. ère, se situe dans une zone de montagnes, aux marges de la Lycie. Elle est marquée par la présence d’une vaste nécropole au sein de laquelle subsiste un temple-tombeau ( hérôon ) parmi les mieux préservés d’Asie Mineure méridionale. L’inscription gravée in situ ainsi que le décor sculpté qui lui est associé renvoient à un personnage du nom de Trokondas fils de Trokondas, petit-fils d’Attéous. Le but de cet article est de déterminer la date de construction du temple-tombeau, d’établir un lien entre l’iconographie funéraire du monument et le maître des lieux, Trokondas, mais aussi de comprendre le rôle joué par ce dernier dans la région, en particulier sur le territoire de Termessos de Pisidie.
Spectres du léviathan : l’État à l’épreuve de la simplification administrative (2006-2015)
Authors: Gélédan Fabien 
Published: June 2016

Résumé Que fait la simplification administrative à l’État ? Fondé sur une enquête ethnographique conduite entre RGPP et MAP, cet article propose de comprendre la simplification comme une mutation de la présence sensible de l’État. On passe en effet d’une conception libérale fondée sur l’allègement de la « charge administrative » dans le but de favoriser la compétitivité et la croissance, à une vision visant l’amélioration de l’expérience des usagers. Cette évolution, appuyée sur des techniques de plus en plus sophistiquées et diversifiées, comme l’économie comportementale, tend aujourd’hui à dépasser le seul cadre de la simplification pour prendre en charge la nature même de la relation à l’État.
La simplification administrative à l’université : des processus sans anticipation systématique
Authors: Côme Thierry , Rouet Gilles 
Published: June 2016

La simplification administrative peut résulter de processus variés tels que : intention et démarche stratégiques, comportement mimétique organisationnel, simple discours d’affichage, logique instrumentale ou procédurière... En termes d’impacts, la simplification a des répercussions sur les processus de production, les modes d’organisation (organigramme, routines) et peut même remettre en cause dans certains cas les finalités du service, de façon non nécessairement pilotée. L’université française fournit de nombreux exemples de possibles dérives et d’effets pervers de la simplification administrative ; et l’analyse montre bien la nécessité d’en anticiper les effets, d’associer les agents et d’en évaluer les résultats.
Simplifier le droit : du mythe de Sisyphe à l’horticulture juridique ?
Authors: du Marais Bertrand 
Published: June 2016

S’appuyant sur des exemples tirés du droit positif combinés avec des réflexions de nature économique, cet article constate que la simplification du droit est difficile à atteindre pour des raisons objectives : développement de l’État de droit, incomplétude de la réglementation et caractéristiques propres au système juridique français. Souvent qualifiée de politique néolibérale, la simplification du droit transverse pourtant l’éventail idéologique et politique, car la complexité pèse sur les ménages les plus fragiles et peut constituer un instrument stratégique pour des acteurs économiques dominants. Simplifier le droit suppose alors, d’une part, de rendre plus effectif l’évaluation des normes et l’étude d’impact des lois. Cette politique impose, d’autre part, de repenser notre « art de réglementer », de considérer la réglementation comme un instrument de politique publique parmi d’autre et de restaurer la relation entre volonté politique et droit.
De la foi méthodique au dogme de la liberté : l’institutionnalisation de la conscience
Authors: Chandelier Cédric 
Published: June 2016

Au tournant du xx	e siècle, l’épistémologie qui voit le jour en France adopte un recul historique sur les transformations que connaissent alors les mathématiques et la physique. La réhabilitation du lien entre savoir et conscience conduit à l’institutionnalisation de ce lien : un dogme nouveau – la « doctrine de la liberté » – pose les bases d’une crise perpétuelle de l’objectivité scientifique.
Poincaré et le problème de l’esprit
Authors: Crocco Gabriella 
Published: June 2016

La conception du continu de H. Poincaré, telle qu’elle est exposée dans le chapitre 2 de La Science et l’hypothèse, est le résultat du croisement de considérations mathématiques, philosophiques et physiques. Elle est également subordonnée à une théorie des facultés qui renouvelle l’épistémologie kantienne tout en la réinterprétant dans le débat de l’époque. Le but de cet article est double : montrer l’articulation interne de cette conception du continu de Poincaré avec les doctrines mathématiques et physiques qui ont été les siennes et montrer son originalité dans le débat épistémologique de l’époque.
<b>Patterns of use of time by heifers with or without supplementation at different phenological stages of winter grasses
Authors: Sichonany Maria José De Oliveira , Rocha Marta Gomes da , Pötter Luciana , Salvador Paulo Roberto , Bergoli Tuani Lopes , Moterle Paulo Henrique 
Published: June 2016

A joint data analysis was performed to characterize forage intake rate and patterns of use of time by grazing heifers in cold season pastures. Heifers received or not energetic supplementation at different phenological stages of grasses (vegetative, pre-flowering and flowering). Experiments involved 360 heifers with initial age of eight months and average body weight of 145 ± 17 kg, on continuous grazing method and variable number of animals. Supplementaed heifers consumed 17.0% less forage and 22.2% less leaf blades than heifers exclusively on pasture. Grazing activity was concentrated in the afternoon shift, regardless of the feeding system and phenological stages evaluated, with the longest event of rumination during the night. Forage intake rate is similar, regardless of supplement intake and phenological stages of grasses.
Is poverty a matter of perspective? Significance of Amartya Sen for the church’s response to poverty: A public practical theological reflection
Authors: Tenai Noah K. 
Published: June 2016

Poverty continues to present an enormous challenge to the well-being of humanity. Different frameworks on poverty tend to identify different persons as poor, impacting on efforts to fight poverty. The church as a role player in the public domain needs a framework that can assist it in its task of working for salvation and liberation in the face of overwhelming poverty. Acombined framework, from Amartya Sen’s entitlement approach and capability approach, is amalgamated and suggested as an integrated framework that could act as a lens or a viewpoint from which the church could venture to conceptualise, quantify and respond to instances of poverty. Keywords: Poverty; Church; Well-being; Amartya Sen; Entitlement Approach; Capability Approach