bluuebunny/crossref_metadata_2025_split huggingface dataset:
ROTATION IN THE PLEIADES WITH K2. III. SPECULATIONS ON ORIGINS AND EVOLUTION
Authors: Stauffer John , Rebull Luisa , Bouvier Jerome , Hillenbrand Lynne A. , Collier-Cameron Andrew , Pinsonneault Marc , Aigrain Suzanne , Barrado David , Bouy Herve , Ciardi David , Cody Ann Marie , David Trevor , Micela Giusi , Soderblom David , Somers Garrett , Stassun Keivan G. , Valenti Jeff , Vrba Frederick J. 
Published: October 2016

ABSTRACT
We use high-quality K2 light curves for hundreds of stars in the Pleiades to better understand the angular momentum evolution and magnetic dynamos of young low-mass stars. The K2 light curves provide not only rotational periods but also detailed information from the shape of the phased light curve that was not available in previous studies. A slowly rotating sequence begins at

∼ 1.1 (spectral type F5) and ends at

∼ 3.7 (spectral type K8), with periods rising from ∼2 to ∼11 days in that interval. A total of 52% of the Pleiades members in that color interval have periods within 30% of a curve defining the slow sequence; the slowly rotating fraction decreases significantly redward of

= 2.6. Nearly all of the slow-sequence stars show light curves that evolve significantly on timescales less than the K2 campaign duration. The majority of the FGK Pleiades members identified as photometric binaries are relatively rapidly rotating, perhaps because binarity inhibits star–disk angular momentum loss mechanisms during pre-main-sequence evolution. The fully convective late M dwarf Pleiades members (5.0 <

< 6.0) nearly always show stable light curves, with little spot evolution or evidence of differential rotation. During pre-main-sequence evolution from ∼3 Myr (NGC 2264 age) to ∼125 Myr (Pleiades age), stars of 0.3

shed about half of their angular momentum, with the fractional change in period between 3 and 125 Myr being nearly independent of mass for fully convective stars. Our data also suggest that very low mass binaries form with rotation periods more similar to each other and faster than would be true if drawn at random from the parent population of single stars.
PALOMA: A MAGNETIC CV BETWEEN POLARS AND INTERMEDIATE POLARS
Authors: Joshi Arti , Pandey J. C. , Singh K. P. , Agrawal P. C. 
Published: October 2016

ABSTRACT
We present analyses of archival X-ray data obtained from the XMM-Newton satellite and optical photometric data obtained from 1 m class telescopes of ARIES, Nainital of a magnetic cataclysmic variable (MCV) Paloma. Two persistent periods at 156 ± 1 minutes and 130 ± 1 minutes are present in the X-ray data, which we interpret as the orbital and spin periods, respectively. These periods are similar to those obtained from the previous as well as new optical photometric observations. The soft-X-ray excess seen in the X-ray spectrum of Paloma and the averaged X-ray spectra are well fitted by two-temperature plasma models with temperatures of

and

keV with an Fe Kα line and an absorbing column density of 4.6 × 1022 cm−2. This material partially covers 60 ± 2% of the X-ray source. We also present the orbital and spin-phase-resolved spectroscopy of Paloma in the

energy band and find that the X-ray spectral parameters show orbital and spin-phase dependencies. New results obtained from optical and X-ray studies of Paloma indicate that it belongs to a class of a few magnetic CVs that seem to have the characteristics of both the polars and the intermediate polars.
MINI-FILAMENT ERUPTION AS THE INITIATION OF A JET ALONG CORONAL LOOPS
Authors: Hong Junchao , Jiang Yunchun , Yang Jiayan , Yang Bo , Xu Zhe , Xiang Yongyuan 
Published: October 2016

ABSTRACT
Minifilament eruptions (MFEs) and coronal jets are different types of solar small-scale explosive events. We report an MFE observed at the New Vacuum Solar Telescope (NVST). As seen in the NVST Hα images, during the rising phase, the minifilament erupts outward orthogonally to its length, accompanied with a flare-like brightening at the bottom. Afterward, dark materials are found to possibly extend along the axis of the expanded filament body. The MFE is analogous to large filament eruptions. However, a simultaneous observation of the Solar Dynamics Observatory shows that a jet is initiated and flows out along nearby coronal loops during the rising phase of the MFE. Meanwhile, small hot loops, which connect the original eruptive site of the minifilament to the footpoints of the coronal loops, are formed successively. A differential emission measure analysis demonstrates that, on the top of the new small loops, a hot cusp structure exists. We conjecture that the magnetic fields of the MFE interact with magnetic fields of the coronal loops. This interaction is interpreted as magnetic reconnection that produces the jet and the small hot loops.
THE DRAGONFLY NEARBY GALAXIES SURVEY. I. SUBSTANTIAL VARIATION IN THE DIFFUSE STELLAR HALOS AROUND SPIRAL GALAXIES
Authors: Merritt Allison , Dokkum Pieter van , Abraham Roberto , Zhang Jielai 
Published: October 2016

ABSTRACT
Galaxies are thought to grow through accretion; as less massive galaxies are disrupted and merge over time, their debris results in diffuse, clumpy stellar halos enveloping the central galaxy. Here we present a study of the variation in the stellar halos of galaxies, using data from the Dragonfly Nearby Galaxies Survey (DNGS). The survey consists of wide field, deep (

mag arcsec−2) optical imaging of nearby galaxies using the Dragonfly Telephoto Array. Our sample includes eight spiral galaxies with stellar masses similar to that of the Milky Way, inclinations of 16-19 degrees and distances between 7-18 Mpc. We construct stellar mass surface density profiles from the observed g-band surface brightness in combination with the g − r color as a function of radius, and compute the halo fractions from the excess stellar mass (relative to a disk+bulge fit) beyond 5 half-mass radii. We find a mean halo fraction of 0.009 ± 0.005 and a large rms scatter of

dex. The peak-to-peak scatter of the halo fraction is a factor of

—while some galaxies feature strongly structured halos resembling that of M31, three of the eight have halos that are completely undetected in our data. We conclude that spiral galaxies as a class exhibit a rich variety in stellar halo properties, implying that their assembly histories have been highly non-uniform. We find no convincing evidence for an environmental or stellar mass dependence of the halo fraction in the sample.
« Un peuplement de qualité »
Authors: Desage Fabien 
Published: October 2016

La lutte contre la ségrégation socio-spatiale fait partie des objectifs affichés des politiques urbaines en France, depuis le début des années 1990 au moins. Longtemps tournée exclusivement vers les « quartiers sensibles », la Loi relative à la solidarité et au renouvellement urbain (SRU) de décembre 2000 semble infléchir la tendance, en obligeant les communes résidentielles périurbaines d’une certaine taille à atteindre progressivement un taux de 20% de logements sociaux minimum. D’abord contournée, l’application de cette loi devient plus effective à partir de 2008. En appuyant sur l’étude de sa mise en œuvre dans l’agglomération lilloise, l’article se propose, dans un premier temps, d’expliquer ce changement d’attitude inattendu des élus concernés. Dans un second temps, en se concentrant sur le cas d’une commune résidentielle supérieure de cette aire urbaine, il pointe la contrepartie essentielle mais discrète de ce ralliement : l’exercice d’une « préférence communale » dans l’attribution des nouveaux logements. Il résulte de cette discrimination discrète que le développement du logement social dans les communes privilégiées, loin d’infléchir les inégalités socio-spatiales à l’échelle des agglomérations, tend plutôt à les renforcer.
Les organisations internationales dépolitisent-elles les relations internationales ?
Authors: Petiteville Franck 
Published: October 2016

Cet article vise à questionner le diagnostic fréquemment avancé de « dépolitisation » de la régulation internationale assurée par les organisations internationales (OI), thème qui a rarement fait l’objet d’une réflexion approfondie. Basée sur une revue de la littérature de sociologie, de science politique et d’anthropologie relative aux OI, la démarche consiste donc à systématiser la réflexion sur la dialectique politisation/dépolitisation dans les OI. Les principaux vecteurs de la dépolitisation sont identifiés : le recours au registre éthique et normatif, la neutralisation politique de leur discours, et la mobilisation d’une expertise multiforme à des fins d’autolégitimation apolitique. Sont également analysées les contraintes qui jouent en faveur de la dépolitisation de l’action des OI : contraintes décisionnelles et diplomatiques liées à la structure intergouvernementale de leurs instances de décision, contraintes administratives et culturelles inhérentes à la bureaucratie des OI. Enfin, le concept de dépolitisation est discuté pour ses insuffisances : son incapacité à rendre compte du discours politisé de certaines OI et des effets de politisation ou de repolitisation induits aussi bien par les normes éthiques véhiculées que par l’expertise mobilisée.
Une affaire de marges. L’anthropométrie au conseil de révision, France-Allemagne, 1880-1900
Authors: Hartmann Heinrich 
Published: October 2016

En 1891, l’anthropologue allemand Otto Ammon entra en contact avec son collègue René Collignon, médecin militaire à Cherbourg, et une correspondance intense s’instaura entre les deux hommes, au point de constituer un réseau reliant plusieurs anthropomètres en Europe et aux États-Unis. La mensuration des recrues lors des examens devant les conseils de révision était au centre de leurs préoccupations scientifiques. Ces échanges prient pour objet des questions méthodologiques autant qu’ils développèrent une sociabilité transnationale à l’écart des structures académiques, contribuant à doter de légitimité un racisme par les « grands nombres » prétendument objectifs. Ce moment de crise de l’anthropométrie, qui a poussé les chercheurs vers les marges, leur a en même temps servi de ressource qu’une perspective transnationale permet de rendre visible.
Muséophobies. Pour une histoire du musée du point de vue de ses contempteurs
Authors: Labrusse Rémi 
Published: October 2016

La muséophobie est aussi vieille que l’idée de musée. En le récusant dans son principe – et non dans telle ou telle de ses modalités – elle contribue à révéler l’étrangeté intrinsèque d’un phénomène – le musée – qui procède d’une situation historique donnée, celle des sociétés occidentales depuis la Révolution. Deux conditions, génératrices à la fois d’angoisse et d’ivresse, caractérisent cette situation : une historicisation radicale de toute réalité et un culte dominant des images, principe de la société du spectacle. Dès l’origine, ces deux aspects sont identifiés dans la pensée de Quatremère de Quincy, cellule-mère d’une critique radicale de l’idée de musée. Après lui, cette critique, quoique toujours minoritaire, s’est perpétuée selon diverses modalités. On propose ici d’en distinguer trois, présentes aussi bien dans la littérature que dans les arts : la phobie mélancolique, l’élan révolutionnaire et l’introspection critique.
Du « grand Musée européen » au musée intérieur : frontières de l’art et de la création chez Théophile Gautier
Authors: Mosseron Maxence 
Published: October 2016

Nous étudions dans le présent article la passion presque maladive de Théophile Gautier à l’endroit des collections et musées européens. Sa boulimie pour l’art, au sein de l’institution nouvelle que constitue le musée public au xix e siècle, ne semble pas devoir trouver de limite, jusqu’à verser dans une sorte de pathologie. L’approche esthétique comporte un volet technique lié à l’importance du mode de présentation des œuvres : la muséographie joue ainsi un rôle fondamental de classification des collections exposées, servant la mise en valeur des œuvres elles-mêmes. Gautier aborde également la question des écoles nationales et des lieux clos de leur monstration. Une lecture complète de l’histoire de l’art impose le déplacement, car aucune collection n’atteint l’exhaustivité. Dès lors, seul le « musée imaginaire » ou intérieur permet d’abolir les frontières de l’art, la création autorisant une perméabilité qui, grâce à l’objet conservé, assure la migration infinie de l’œuvre.
L’accrochage par écoles au musée du Louvre : art, philosophie et politique sous la Seconde République
Authors: Dargnies Servane 
Published: October 2016

La réorganisation des collections du musée du Louvre immédiatement après la révolution de 1848 participe d’un mouvement général d’appropriation par la critique et les artistes des théories socialistes et républicaines de la monarchie de Juillet. Que faire de l’art du passé dans une société qui prône un art social ? Cette question, lancinante entre 1830 et 1848, ne peut se passer d’une réflexion sur l’institution muséale et montre la dimension à la fois politique et philosophique d’un accrochage de musée. Deux figures de républicains démocrates ont pensé l’accrochage par écoles dans toute sa dimension politique : Philippe-Auguste Jeanron, directeur des Musées nationaux du 28 février 1848 au 25 décembre 1849, et son camarade républicain Théophile Thoré, journaliste et critique influent de la monarchie de Juillet.
L’histoire au noir de Philippe Muray. Le xix e siècle à travers les âges entre littérature et histoire
Authors: Cuchet Guillaume 
Published: October 2016

En avril 1984, l’écrivain Philippe Muray publiait un gros livre intitulé Le xix e siècle à travers les âges qui fit forte impression. Il se présentait comme un projet d’archéologie culturelle du monde contemporain fondé sur l’idée de « dixneuviémité », celle-ci désignant à la fois l’esprit du xix e siècle et une tendance de l’esprit humain auquel le xix e siècle historique aurait donné forme et place dans la culture. Au cœur de cette « dixneuviémité » se trouvait selon l’auteur l'« occulto-socialisme » − l'« ocsoc » en abrégé −, un mélange de progressisme politique et de religiosité hétérodoxe dont Hugo incarnait le type le plus achevé. La thèse, volontairement polémique, est illustrée par tout un voyage dans la littérature du siècle, grande et petite, d’imagination et de doctrine, au cours duquel Muray évalue la part variable de « dixneuviémité » de ses différents protagonistes. L’ouvrage est devenu un classique paradoxal de l’historiographie du xix e siècle qui continue de susciter chez les spécialistes des réactions très contrastées. Si sa dimension littéraire est évidente, Muray y déploie bel et bien un certain type d’opération historiographique qui a prouvé sa fécondité par sa capacité à proposer une vision singulière du siècle, à inventer de nouveaux objets et par certaines de ses thèses qui, aujourd’hui encore, sont susceptibles de faire réfléchir.
Mini-Workshop: Mathematical Foundations of Isogeometric Analysis
Authors: Hughes Thomas J.R. , Jüttler Bert , Kunoth Angela , Simeon Bernd 
Published: October 2016

Isogeometric Analysis (IgA) is a new paradigm which is designed to merge two so far disjoint disciplines, namely, numerical simulations for partial differential equations (PDEs) and applied geometry. Initiated by the pioneering 2005 paper of one of us organizers (Hughes), this new concept bridges the gap between classical finite element methods and computer aided design concepts.
Traditional approaches are based on modeling complex geometries by computer aided design tools which then need to be converted to a computational mesh to allow for simulations of PDEs. This process has for decades presented a severe bottleneck in performing efficient simulations. For example, for complex fluid dynamics applications, the modeling of the surface and the mesh generation may take several weeks while the PDE simulations require only a few hours.
On the other hand, simulation methods which exactly represent geometric shapes in terms of the basis functions employed for the numerical simulations bridge the gap and allow from the beginning to eliminate geometry errors. This is accomplished by leaving traditional finite element approaches behind and employing instead more general basis functions such as B-Splines and Non-Uniform Rational B-Splines (NURBS) for the PDE simulations as well. The combined concept of Isogeometric Analysis (IgA) allows for improved convergence and smoothness properties of the PDE solutions and dramatically faster overall simulations.
In the last few years, this new paradigm has revolutionized the engineering communities and triggered an enormous amount of simulations and publications mainly in this field. However, there are several profound theoretical issues which have not been well understood and which are currently investigated by researchers in Numerical Analysis, Approximation Theory and Applied Geometry.
Chikungunya Virus Infection and Diabetes Mellitus: A Double Negative Impact
Authors: Jean-Baptiste Eddy , von Oettingen Julia , Larco Philippe , Raphaël Frédérica , Larco Nancy Charles , Cauvin Marie Marcelle , Charles René 
Published: October 2016

Abstract
The impact of chikungunya virus (CHIKV) infection on diabetic patients (DPs) has not been described. We aimed to compare clinical features of CHIKV infection in DPs and nondiabetic patients (NDPs), and to evaluate its effects on glycemic control among DPs. We recorded clinical information and, in DPs, glycemic control. Forty-six DPs and 53 NDPs aged ≥ 20 years living in Haiti, with acute CHIKV infection, were studied. Diabetes duration was 7.1 ± 6.1 years. The most common acute CHIKV clinical manifestations were arthralgia (100.0% DPs and 98.1% NDPs, P = 1.000) and fever (86.9% DPs and 90.5% NDPs, P = 0.750). In DPs as compared with NDPs, arthralgia was more intense (mean pain score of 6.0/10 ± 2.2 versus 5.1/10 ± 2.0, P = 0.04) and took longer to improve (8.2 ± 3.0 versus 3.5 ± 2.5 days, P < 0.0001). Severe arthralgia was more prevalent (58.7% versus 20.8%, P = 0.0002), as was myalgia (80.4% versus 50.9%, P = 0.003), and fever lasted longer (5.1 ± 1.8 versus 3.7 ± 1.7 days, P = 0.0002). Among DPs, median fasting capillary glucose before versus after disease onset was 132.5 and 167.5 mg/dL (P < 0.001), corresponding to a median increase of 26.8% (interquartile range: 14.4–50.1%). Antidiabetic medication was titrated up in 41.3%. In summary, among DPs, CHIKV infection has a significant negative impact on glycemic control and, compared with NDPs, results in greater morbidity. Close clinical and glycemic observation is recommended in DPs with CHIKV infection.
A Meta-Analysis of Serological Response Associated with Yellow Fever Vaccination
Authors: Jean Kévin , Donnelly Christl A. , Ferguson Neil M. , Garske Tini 
Published: October 2016

Abstract
Despite previous evidence of high level of efficacy, no synthetic metric of yellow fever (YF) vaccine efficacy is currently available. Based on the studies identified in a recent systematic review, we conducted a random-effects meta-analysis of the serological response associated with YF vaccination. Eleven studies conducted between 1965 and 2011 representing 4,868 individual observations were included in the meta-analysis. The pooled estimate of serological response was 97.5% (95% confidence interval [CI] = 82.9–99.7%). There was evidence of between-study heterogeneity (I2 = 89.1%), but this heterogeneity did not appear to be related to study size, study design, or seroconversion measurement or definition. Pooled estimates were significantly higher (P < 0.0001) among studies conducted in nonendemic settings (98.9%, 95% CI = 98.2–99.4%) than among those conducted in endemic settings (94.2%, 95% CI = 83.8–98.1%). These results provide background information against which to evaluate the efficacy of fractional doses of YF vaccine that may be used in outbreak situations.
Vertical profiles of aerosol and black carbon in the Arctic: a seasonal
phenomenology along 2 years (2011–2012) of field campaigns
Authors: Ferrero Luca , Cappelletti David , Busetto Maurizio , Mazzola Mauro , Lupi Angelo , Lanconelli Christian , Becagli Silvia , Traversi Rita , Caiazzo Laura , Giardi Fabio , Moroni Beatrice , Crocchianti Stefano , Fierz Martin , Močnik Griša , Sangiorgi Giorgia , Perrone Maria G. , Maturilli Marion , Vitale Vito , Udisti Roberto , Bolzacchini Ezio 
Published: October 2016

Abstract. We present results from a systematic study of vertical profiles of aerosol number size distribution and black carbon (BC) concentrations conducted in the Arctic, over Ny-Ålesund (Svalbard). The campaign lasted 2 years (2011–2012) and resulted in 200 vertical profiles measured by means of a tethered balloon (up to 1200 m a.g.l.) during the spring and summer seasons. In addition, chemical analysis of filter samples, aerosol size distribution and a full set of meteorological parameters were determined at ground. The collected experimental data allowed a classification of the vertical profiles into different typologies, which allowed us to describe the seasonal phenomenology of vertical aerosol properties in the Arctic. During spring, four main types of profiles were found and their behavior was related to the main aerosol and atmospheric dynamics occurring at the measuring site. Background conditions generated homogenous profiles. Transport events caused an increase of aerosol concentration with altitude. High Arctic haze pollution trapped below thermal inversions promoted a decrease of aerosol concentration with altitude. Finally, ground-based plumes of locally formed secondary aerosol determined profiles with decreasing aerosol concentration located at different altitude as a function of size. During the summer season, the impact from shipping caused aerosol and BC pollution plumes to be constrained close to the ground, indicating that increasing shipping emissions in the Arctic could bring anthropogenic aerosol and BC in the Arctic summer, affecting the climate.
Photochemical organonitrate formation in wet aerosols
Authors: Lim Yong Bin , Kim Hwajin , Kim Jin Young , Turpin Barbara J. 
Published: October 2016

Abstract. Water is the most abundant component of atmospheric fine aerosol. However, despite rapid progress, multiphase chemistry involving wet aerosols is still poorly understood. In this work, we report results from smog chamber photooxidation of glyoxal- and OH-containing ammonium sulfate or sulfuric acid particles in the presence of NOx and O3 at high and low relative humidity. Particles were analyzed using ultra-performance liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS). During the 3 h irradiation, OH oxidation products of glyoxal that are also produced in dilute aqueous solutions (e.g., oxalic acids and tartaric acids) were formed in both ammonium sulfate (AS) aerosols and sulfuric acid (SA) aerosols. However, the major products were organonitrogens (CHNO), organosulfates (CHOS), and organonitrogen sulfates (CHNOS). These were also the dominant products formed in the dark chamber, indicating non-radical formation. In the humid chamber (> 70 % relative humidity, RH), two main products for both AS and SA aerosols were organonitrates, which appeared at m ∕ z− 147 and 226. They were formed in the aqueous phase via non-radical reactions of glyoxal and nitric acid, and their formation was enhanced by photochemistry because of the photochemical formation of nitric acid via reactions of peroxy radicals, NOx and OH during the irradiation.