bluuebunny/crossref_metadata_2025 huggingface dataset:
MOLECULAR GAS VELOCITY DISPERSIONS IN THE ANDROMEDA GALAXY
Authors: Caldú-Primo Anahi , Schruba Andreas
Published: January 2016

In order to characterize the distribution of molecular gas in spiral galaxies, we study the line profiles of CO (1 – 0) emission in Andromeda, our nearest massive spiral galaxy. We compare observations performed with the IRAM 30 m single-dish telescope and with the CARMA interferometer at a common resolution of 23 arcsec ≈ 85 pc × 350 pc and 2.5 km s−1. When fitting a single Gaussian component to individual spectra, the line profile of the single dish data is a factor of 1.5 ± 0.4 larger than the interferometric data one. This ratio in line widths is surprisingly similar to the ratios previously observed in two other nearby spirals, NGC 4736 and NGC 5055, but measured at ∼0.5–1 kpc spatial scale. In order to study the origin of the different line widths, we stack the individual spectra in five bins of increasing peak intensity and fit two Gaussian components to the stacked spectra. We find a unique narrow component of FWHM = 7.5 ± 0.4 km s−1 visible in both the single dish and the interferometric data. In addition, a broad component with FWHM = 14.4 ± 1.5 km s−1 is present in the single-dish data, but cannot be identified in the interferometric data. We interpret this additional broad line width component detected by the single dish as a low brightness molecular gas component that is extended on spatial scales >0.5 kpc, and thus filtered out by the interferometer. We search for evidence of line broadening by stellar feedback across a range of star formation rates but find no such evidence on ∼100 pc spatial scale when characterizing the line profile by a single Gaussian component.
THE REFLARES AND OUTBURST EVOLUTION IN THE ACCRETING MILLISECOND PULSAR SAX J1808.4–3658: A DISK TRUNCATED NEAR CO-ROTATION?
Authors: Patruno A. , Maitra D. , Curran P. A. , D’Angelo C. , Fridriksson J. K. , Russell D. M. , Middleton M. , Wijnands R.
Published: January 2016

The accreting millisecond X-ray pulsar SAX J1808.4–3658 shows peculiar low luminosity states known as “reflares” after the end of the main outburst. During this phase the X-ray luminosity of the source varies by up to three orders of magnitude in less than 1–2 days. The lowest X-ray luminosity observed reaches a value of

, only a factor of a few brighter than its typical quiescent level. We investigate the 2008 and 2005 reflaring state of SAX J1808.4–3658 to determine whether there is any evidence for a change in the accretion flow with respect to the main outburst. We perform a multiwavelength photometric and spectral study of the 2005 and 2008 reflares with data collected during an observational campaign covering the near-infrared, optical, ultra-violet and X-ray band. We find that the NIR/optical/UV emission, expected to come from the outer accretion disk, shows variations in luminosity over an order of magnitude. The corresponding X-ray luminosity variations are instead much deeper, spanning about 2–3 orders of magnitude. The X-ray spectral state observed during the reflares does not change substantially with X-ray luminosity, indicating a rather stable configuration of the accretion flow. We investigate the most likely configuration of the innermost regions of the accretion flow and we infer an accretion disk truncated at or near the co-rotation radius. We interpret these findings as due to either a strong outflow (due to a propeller effect) or a trapped disk (with limited/no outflow) in the inner regions of the accretion flow.
THE DEFINITIVE X-RAY LIGHT CURVE OF SWIFT J164449.3+573451
Authors: Mangano V. , Burrows D. N. , Sbarufatti B. , Cannizzo J. K.
Published: January 2016

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

power law up to 2012 August 17. The steep turnoff of an order of magnitude in 24 hr seems to be consistent with the shutdown of the jet as the accretion disk transitioned from a thick disk to a thin disk. Swift continues to monitor this source in case the jet reactivates.
THE LICK-CARNEGIE EXOPLANET SURVEY: HD 32963—A NEW JUPITER ANALOG ORBITING A SUN-LIKE STAR
Authors: Rowan Dominick , Meschiari Stefano , Laughlin Gregory , Vogt Steven S. , Butler R. Paul , Burt Jennifer , Wang Songhu , Holden Brad , Hanson Russell , Arriagada Pamela , Keiser Sandy , Teske Johanna , Diaz Matias
Published: January 2016

We present a set of 109 new, high-precision Keck/HIRES radial velocity (RV) observations for the solar-type star HD 32963. Our data set reveals a candidate planetary signal with a period of 6.49 ± 0.07 years and a corresponding minimum mass of 0.7 ± 0.03 Jupiter masses. Given Jupiter's crucial role in shaping the evolution of the early Solar System, we emphasize the importance of long-term RV surveys. Finally, using our complete set of Keck radial velocities and correcting for the relative detectability of synthetic planetary candidates orbiting each of the 1122 stars in our sample, we estimate the frequency of Jupiter analogs across our survey at approximately 3%.
ATMOSPHERES OF LOW-MASS PLANETS: THE “BOIL-OFF”
Authors: Owen James E. , Wu Yanqin
Published: January 2016

We show that, for a low-mass planet that orbits its host star within a few tenths of an AU (like the majority of the Kepler planets), the atmosphere it was able to accumulate while embedded in the protoplanetary disk may not survive unscathed after the disk disperses. This gas envelope, if more massive than a few percent of the core (with a mass below

), has a cooling time that is much longer than the timescale on which the planet exits the disk. As such, it could not have contracted significantly from its original size, of the order of the Bondi radius. So a newly exposed protoplanet would be losing mass via a Parker wind that is catalyzed by the stellar continuum radiation. This represents an intermediate stage of mass-loss, occurring soon after the disk has dispersed, but before the EUV/X-ray driven photoevaporation becomes relevant. The surface mass-loss induces a mass movement within the envelope that advects internal heat outward. As a result, the planet atmosphere rapidly cools down and contracts, until it has reached a radius of the order of 0.1 Bondi radius, at which time the mass-loss effectively shuts down. Within a million years after the disk disperses, we find a planet that has only about 10% of its original envelope, and a Kelvin–Helmholtz time that is much longer than its actual age. We suggest that this “boil-off” process may be partially responsible for the lack of planets above a radius of

in the Kepler data, provided planet formation results in initial envelope masses of tens of percent.
SUPERLUMINOUS SPIRAL GALAXIES
Authors: Ogle Patrick M. , Lanz Lauranne , Nader Cyril , Helou George
Published: January 2016

We report the discovery of spiral galaxies that are as optically luminous as elliptical brightest cluster galaxies, with r-band monochromatic luminosity L

r
 = 8–14L* (4.3–7.5 × 1044 erg s−1). These super spiral galaxies are also giant and massive, with diameter D = 57–134 kpc and stellar mass M
stars = 0.3–3.4 × 1011
M
⊙. We find 53 super spirals out of a complete sample of 1616 SDSS galaxies with redshift z < 0.3 and L

r
 > 8L*. The closest example is found at z = 0.089. We use existing photometry to estimate their stellar masses and star formation rates (SFRs). The SDSS and Wide-field Infrared Survey Explorer colors are consistent with normal star-forming spirals on the blue sequence. However, the extreme masses and rapid SFRs of 5–65 M
⊙ yr−1 place super spirals in a sparsely populated region of parameter space, above the star-forming main sequence of disk galaxies. Super spirals occupy a diverse range of environments, from isolation to cluster centers. We find four super spiral galaxy systems that are late-stage major mergers—a possible clue to their formation. We suggest that super spirals are a remnant population of unquenched, massive disk galaxies. They may eventually become massive lenticular galaxies after they are cut off from their gas supply and their disks fade.
MAPPING THE GAS TURBULENCE IN THE COMA CLUSTER: PREDICTIONS FOR ASTRO-H
Authors: ZuHone J. A. , Markevitch M. , Zhuravleva I.
Published: January 2016

Astro-H will be able for the first time to map gas velocities and detect turbulence in galaxy clusters. One of the best targets for turbulence studies is the Coma cluster, due to its proximity, absence of a cool core, and lack of a central active galactic nucleus. To determine what constraints Astro-H will be able to place on the Coma velocity field, we construct simulated maps of the projected gas velocity and compute the second-order structure function, an analog of the velocity power spectrum. We vary the injection scale, dissipation scale, slope, and normalization of the turbulent power spectrum, and apply measurement errors and finite sampling to the velocity field. We find that even with sparse coverage of the cluster, Astro-H will be able to measure the Mach number and the injection scale of the turbulent power spectrum—the quantities determining the energy flux down the turbulent cascade and the diffusion rate for everything that is advected by the gas (metals, cosmic rays, etc.). Astro-H will not be sensitive to the dissipation scale or the slope of the power spectrum in its inertial range, unless they are outside physically motivated intervals. We give the expected confidence intervals for the injection scale and the normalization of the power spectrum for a number of possible pointing configurations, combining the structure function and velocity dispersion data. Importantly, we also determine that measurement errors on the line shift will bias the velocity structure function upward, and show how to correct this bias.
A PROPER MOTION SURVEY USING THE FIRST SKY PASS OF NEOWISE-REACTIVATION DATA
Authors: Schneider Adam C. , Greco Jennifer , Cushing Michael C. , Kirkpatrick J. Davy , Mainzer Amy , Gelino Christopher R. , Fajardo-Acosta Sergio B. , Bauer James
Published: January 2016

The Wide-field Infrared Survey Explorer (WISE) was reactivated in 2013 December (NEOWISE) to search for potentially hazardous near-Earth objects. We have conducted a survey using the first sky pass of NEOWISE data and the AllWISE catalog to identify nearby stars and brown dwarfs with large proper motions (

≳ 250 mas yr−1). A total of 20,548 high proper motion objects were identified, 1006 of which are new discoveries. This survey has uncovered a significantly larger sample of fainter objects (

mag) than the previous WISE motion surveys of Luhman and Kirkpatrick et al. Many of these objects are predicted to be new L and T dwarfs based on near- and mid-infrared colors. Using estimated spectral types along with distance estimates, we have identified several objects that likely belong to the nearby solar neighborhood (d < 25 pc). We have followed up 19 of these new discoveries with near-infrared or optical spectroscopy, focusing on potentially nearby objects, objects with the latest predicted spectral types, and potential late-type subdwarfs. This subset includes six M dwarfs, five of which are likely subdwarfs, as well as eight L dwarfs and five T dwarfs, many of which have blue near-infrared colors. As an additional supplement, we provide 2MASS and AllWISE positions and photometry for every object found in our search, as well as 2MASS/AllWISE calculated proper motions.
PROTON SYNCHROTRON RADIATION FROM EXTENDED JETS OF PKS 0637–752 AND 3C 273
Authors: Bhattacharyya Wrijupan , Gupta Nayantara
Published: January 2016

Many powerful radio quasars are associated with large-scale jets, exhibiting bright knots as shown by high-resolution images from the Hubble Space Telescope (HST) and the Chandra X-ray Observatory. The radio-optical flux component from these jets can be attributed to synchrotron radiation by accelerated relativistic electrons while the IC/CMB model, by far, has been the most popular explanation for the observed X-ray emission from these jets. Recently, the IC/CMB X-ray mechanism has been strongly disfavored for 3C 273 and PKS 0637–752 since the anomalously hard and steady gamma-ray emission predicted by such models violates the observational results from Fermi-LAT. Here we propose the proton synchrotron origin of the X-ray–gamma-ray flux from the knots of PKS 0637–752 with a reasonable budget in luminosity, by considering synchrotron radiation from an accelerated proton population. Moreover, for the source 3C 273, the optical data points near 1015 Hz could not be fitted using electron synchrotron. We propose an updated proton synchrotron model, including the optical data from HST, to explain the common origin of optical-X-ray–gamma-ray emission from the knots of quasar 3C 273 as an extension of the work done by Kundu & Gupta. We also show that TeV emission from large-scale quasar jets, in principle, can arise from proton synchrotron, which we discuss in the context of knot wk8.9 of PKS 0637–752.
ON THE OBSERVATION AND SIMULATION OF SOLAR CORONAL TWIN JETS
Authors: Liu Jiajia , Fang Fang , Wang Yuming , McIntosh Scott W. , Fan Yuhong , Zhang Quanhao
Published: January 2016

We present the first observation, analysis, and modeling of solar coronal twin jets, which occurred after a preceding jet. Detailed analysis on the kinetics of the preceding jet reveals its blowout-jet nature, which resembles the one studied in Liu et al. However, the erupting process and kinetics of the twin jets appear to be different from the preceding one. Lacking detailed information on the magnetic fields in the twin jet region, we instead use a numerical simulation using a three-dimensional (3D) MHD model as described in Fang et al., and find that in the simulation a pair of twin jets form due to reconnection between the ambient open fields and a highly twisted sigmoidal magnetic flux, which is the outcome of the further evolution of the magnetic fields following the preceding blowout jet. Based on the similarity between the synthesized and observed emission, we propose this mechanism as a possible explanation for the observed twin jets. Combining our observation and simulation, we suggest that with continuous energy transport from the subsurface convection zone into the corona, solar coronal twin jets could be generated in the same fashion addressed above.
THE GMRT HIGH RESOLUTION SOUTHERN SKY SURVEY FOR PULSARS AND TRANSIENTS. I. SURVEY DESCRIPTION AND INITIAL DISCOVERIES
Authors: Bhattacharyya B. , Cooper S. , Malenta M. , Roy J. , Chengalur J. , Keith M. , Kudale S. , McLaughlin M. , Ransom S. M. , Ray P. S. , Stappers B. W.
Published: January 2016

We are conducting a survey for pulsars and transients using the Giant Metrewave Radio Telescope (GMRT). The GMRT High Resolution Southern Sky (GHRSS) survey is an off-Galactic plane (

> 5) survey in the declination range −40° to −54° at 322 MHz. With the high time (up to 30.72 μs) and frequency (up to 0.016275 MHz) resolution observing modes, the 5σ detection limit is 0.5 mJy for a 2 ms pulsar with a 10% duty cycle at 322 MHz. The total GHRSS sky coverage of 2866 deg2 will result from 1953 pointings, each covering 1.8 deg2. The 10σ detection limit for a 5 ms transient burst is 1.6 Jy for the GHRSS survey. In addition, the GHRSS survey can reveal transient events like rotating radio transients or fast radio bursts. With 35% of the survey completed (i.e., 1000 deg2), we report the discovery of 10 pulsars, 1 of which is a millisecond pulsar (MSP), which is among the highest pulsar per square degree discovery rates for any off-Galactic plane survey. We re-detected 23 known in-beam pulsars. Utilizing the imaging capability of the GMRT, we also localized four of the GHRSS pulsars (including the MSP) in the gated image plane within ±10″. We demonstrated rapid convergence in pulsar timing with a more precise position than is possible with single-dish discoveries. We also show that we can localize the brightest transient sources with simultaneously obtained lower time resolution imaging data, demonstrating a technique that may have application in the Square Kilometre Array.
HIGH-SENSITIVITY 86 GHz (3.5 mm) VLBI OBSERVATIONS OF M87: DEEP IMAGING OF THE JET BASE AT A RESOLUTION OF 10 SCHWARZSCHILD RADII
Authors: Hada Kazuhiro , Kino Motoki , Doi Akihiro , Nagai Hiroshi , Honma Mareki , Akiyama Kazunori , Tazaki Fumie , Lico Rocco , Giroletti Marcello , Giovannini Gabriele , Orienti Monica , Hagiwara Yoshiaki
Published: January 2016

We report on results from new high-sensitivity, high-resolution 86 GHz (3.5 mm) observations of the jet base in the nearby radio galaxy M87, obtained by the Very Long Baseline Array in conjunction with the Green Bank Telescope. The resulting image has a dynamic range exceeding 1500 to 1, the highest ever achieved for this jet at this frequency, resolving and imaging a detailed jet formation/collimation structure down to ∼10 Schwarzschild radii (

). The obtained 86 GHz image clearly confirms some important jet features known at lower frequencies, i.e., a jet base with a wide opening angle, a limb-brightened intensity profile, a parabola-shape collimation profile and a counter jet. The limb-brightened structure is already well developed at

mas (

, projected) from the core, where the corresponding apparent opening angle becomes as wide as ∼100°. The subsequent jet collimation near the black hole evolves in a complicated manner; there is a “constricted” structure at tens of

from the core, where the jet cross section is locally shrinking. We suggest that external pressure support from the inner part of the radiatively inefficient accretion flow may be dynamically important in shaping/confining the footprint of the magnetized jet. We also present the first 86 GHz polarimetric experiment using very long baseline interferometry for this source, where a highly polarized (∼20%) feature is detected near the jet base, indicating the presence of a well-ordered magnetic field. As a by-product, we additionally report a 43/86 GHz polarimetric result for our calibrator 3C 273, suggesting an extreme rotation measure near the core.
THE MOST LUMINOUS SUPERNOVA ASASSN-15LH: SIGNATURE OF A NEWBORN RAPIDLY ROTATING STRANGE QUARK STAR
Authors: Dai Z. G. , Wang S. Q. , Wang J. S. , Wang L. J. , Yu Y. W.
Published: January 2016

In this paper we show that the most luminous supernova discovered very recently, ASASSN-15lh, could have been powered by a newborn ultra-strongly magnetized pulsar, which initially rotates near the Kepler limit. We find that if this pulsar is a neutron star, its rotational energy could be quickly lost as a result of gravitational-radiation-driven r-mode instability; if it is a strange quark star (SQS), however, this instability is highly suppressed due to a large bulk viscosity associated with the nonleptonic weak interaction among quarks and thus most of its rotational energy could be extracted to drive ASASSN-15lh. Therefore, we conclude that such an ultra-energetic supernova provides a possible signature for the birth of an SQS.
SIMULATIONS OF ENERGETIC PARTICLES INTERACTING WITH DYNAMICAL MAGNETIC TURBULENCE
Authors: Hussein M. , Shalchi A.
Published: January 2016

We explore the transport of energetic particles in interplanetary space by using test-particle simulations. In previous work such simulations have been performed by using either magnetostatic turbulence or undamped propagating plasma waves. In the current paper we simulate for the first time particle transport in dynamical turbulence. To do so we employ two models, namely the damping model of dynamical turbulence and the random sweeping model. We compute parallel and perpendicular diffusion coefficients and compare our numerical findings with solar wind observations. We show that good agreement can be found between simulations and the Palmer consensus range for both dynamical turbulence models if the ratio of turbulent magnetic field and mean field is δB/B
0 = 0.5.
MAGNETIC FIELD AMPLIFICATION BY COLLISIONLESS SHOCKS IN PARTIALLY IONIZED PLASMAS
Authors: Ohira Yutaka
Published: January 2016

In this paper, we study the shock structures of collisionless shocks in partially ionized plasmas by means of two-dimensional hybrid simulations, where the shock is a perpendicular shock with shock velocity

and the upstream ionization fraction is 0.5. We find that large density fluctuations and large magnetic field fluctuations are generated both in the upstream and downstream regions. In addition, we find that the velocity distribution of downstream hydrogen atoms has three components. The observed shock structures suggest that diffusive shock acceleration can operate at perpendicular shocks propagating into partially ionized plasmas in real three-dimensional systems.
ACCURATE MODELING OF X-RAY EXTINCTION BY INTERSTELLAR GRAINS
Authors: Hoffman John , Draine B. T.
Published: January 2016

Interstellar abundance determinations from fits to X-ray absorption edges often rely on the incorrect assumption that scattering is insignificant and can be ignored. We show instead that scattering contributes significantly to the attenuation of X-rays for realistic dust grain size distributions and substantially modifies the spectrum near absorption edges of elements present in grains. The dust attenuation modules used in major X-ray spectral fitting programs do not take this into account. We show that the consequences of neglecting scattering on the determination of interstellar elemental abundances are modest; however, scattering (along with uncertainties in the grain size distribution) must be taken into account when near-edge extinction fine structure is used to infer dust mineralogy. We advertise the benefits and accuracy of anomalous diffraction theory for both X-ray halo analysis and near edge absorption studies. We present an open source Fortran suite, General Geometry Anomalous Diffraction Theory (GGADT), that calculates X-ray absorption, scattering, and differential scattering cross sections for grains of arbitrary geometry and composition.
ANALYSIS OF THE INSTABILITY DUE TO GAS–DUST FRICTION IN PROTOPLANETARY DISKS
Authors: Shadmehri Mohsen
Published: January 2016

We study the stability of a dust layer in a gaseous disk subject to linear axisymmetric perturbations. Instead of considering single-size particles, however, the population of dust particles is assumed to consist of two grain species. Dust grains exchange momentum with the gas via the drag force and their self-gravity is also considered. We show that the presence of two grain sizes can increase the efficiency of the linear growth of drag-driven instability in the protoplanetary disks (PPDs). A second dust phase with a small mass, compared to the first dust phase, would reduce the growth timescale by a factor of two or more, especially when its coupling to the gas is weak. This means that once a certain amount of large dust particles form, even though it is much smaller than that of small dust particles, the dust layer becomes more unstable and dust clumping is accelerated. Thus, the presence of dust particles of various sizes must be considered in studies of dust clumping in PPDs where both large and small dust grains are present.
THE SPLASH SURVEY: QUIESCENT GALAXIES ARE MORE STRONGLY CLUSTERED BUT ARE NOT NECESSARILY LOCATED IN HIGH-DENSITY ENVIRONMENTS
Authors: Lin Lihwai , Capak P. L. , Laigle C. , Ilbert O. , Hsieh Bau-Ching , Jian Hung-Yu , Lemaux B. C. , Silverman J. D. , Coupon Jean , McCracken H. J. , Hasinger G. , Févre O. Le , Scoville N.
Published: January 2016

We use the stellar-mass-selected catalog from the Spitzer Large Area Survey with Hyper-Suprime-Cam (SPLASH) in the COSMOS field to study the environments of galaxies via galaxy density and clustering analyses up to

The clustering strength of quiescent galaxies exceeds that of star-forming galaxies, implying that quiescent galaxies are preferentially located in more massive halos. When using local density measurement, we find a clear positive quiescent fraction–density relation at

consistent with earlier results. However, the quiescent fraction–density relation reverses its trend at intermediate redshifts (

) with marginal significance (<1.8σ) and is found to be scale dependent (1.6σ). The lower fraction of quiescent galaxies seen in large-scale dense environments, if confirmed to be true, may be associated with the fact that the star formation can be more easily sustained via cold stream accretion in “large-scale” high-density regions, preventing galaxies from permanent quenching. Finally, at

the quiescent fraction depends little on the local density, even though clustering shows that quiescent galaxies are in more massive halos. We argue that at high redshift the typical halo size falls below 1013 , where intrinsically the local density measurements are so varied that they do not trace the halo mass. Our results thus suggest that in the high-redshift universe, halo mass may be the key in quenching the star formation in galaxies, rather than the conventionally measured galaxy density.
L'anorexie mentale
Authors: Nandrino Jean-Louis
Published: January 2016

Nous proposons dans ce chapitre d’aborder l’hypothèse du lien entre la survenue d’événements traumatiques et l’apparition des troubles alimentaires. Les données suggèrent l’existence d’un effet de cumul d’événements stressants dans la période précédant la survenue de l’anorexie. Par ailleurs, cet effet s’explique par le recours à certains mécanismes psychologiques et biologiques. Nous montrerons le rôle des stratégies d’évitement et de la rumination, le rôle des troubles anxieux associés et du niveau de perfectionnisme, de l’estime de soi et des changements biologiques liés à la réponse au stress. Nous développerons l’hypothèse d’une association, dans un modèle multifactoriel, de facteurs de vulnérabilité (comme l’existence d’événements aversifs) à des facteurs favorisants (comme des stratégies d’ajustement particulières) qui contribuent à la fois au développement et au maintien des troubles du comportement alimentaire.
L'anorexie mentale
Authors: Doba Karyn
Published: January 2016

L’approche étiologique actuelle de l’anorexie mentale pose l’existence d’un déterminisme multifactoriel impliquant un modèle d’interactions complexes entre des facteurs familiaux prédisposants et pérennisants. Les travaux actuels sur l’attachement suggèrent que les troubles de l’attachement peuvent entraîner des déficits dans la capacité à réguler les états internes et les relations interpersonnelles et aboutir ainsi au développement de l’anorexie mentale.
L'anorexie mentale
Authors: Rommel Delphine , Nandrino Jean-Louis
Published: January 2016

L’anorexie mentale se caractérise par des difficultés émotionnelles telles qu’une alexithymie, un défaut de conscience intéroceptive ou encore des difficultés dans la reconnaissance de ses propres états émotionnels comme ceux d’autrui. Ces désordres émotionnels sont étroitement liés au développement du trouble alimentaire dans ses liens avec les relations familiales et les événements aversifs vécus et participent grandement au pronostic de la maladie. Associé à une forte dénutrition et aux difficultés d’identification et de catégorisation, il existerait en particulier un déficit de régulation émotionnelle qui participerait fortement au risque de maintien des symptômes, voire à la chronicisation du trouble.
L'anorexie mentale
Authors: Pedinielli Jean-Louis , Grimaldi Marie-Ange , Ferran Anne
Published: January 2016

La psychanalyse considère l’anorexie, à partir de la subjectivité et de l’économie psychique, comme une tentative (échouée) de défense contre l’angoisse suscitée par l’adolescence sur un psychisme qui n’y est pas préparé. L’écoute de l’analyste aide à une prise de conscience des conflits et de l’angoisse, à leur nomination, dans le double sens d’une élaboration psychique (représentation, symbolisation, attribution du sens...) et d’un changement dans le rapport au corps.
L’entreprise, territoire des éthiques professionnelles. Etude de six cas d’accompagnement d’entrepreneurs
Authors: Brasseur Martine
Published: January 2016

Cet article présente les résultats d’une étude de six cas d’accompagnement professionnel d’entrepreneurs correspondants à 32 entretiens individuels. Notre objectif est d’approfondir la notion de territoire au travail en soulignant son lien dans la démarche entrepreneuriale avec le développement d’un espace de bonnes pratiques répondant à la quête éthique des personnes. Nos résultats font notamment ressortir les enjeux associés à la reconnaissance d’une légitimité éthique des territoires professionnels.
La crédibilité des avis en ligne : une revue de littérature et un modèle intégrateur
Authors: Soulard Olivier
Published: January 2016

Les avis en ligne sont devenus l’une des plus importantes sources d’information des consommateurs quoique leur crédibilité soit sujette à caution en raison de l’anonymat de l’Internet. Cet article se fonde sur une revue de la littérature pour préciser l’impact de deux variables antécédentes de la crédibilité d’un avis en ligne : le profil de l’auteur et la qualité des arguments. Il s’intéresse ensuite à une variable modératrice des relations respectives entre ces deux variables et la crédibilité d’un avis en ligne : l’implication. Il propose ensuite trois modérateurs alternatifs : l’expertise, le scepticisme et le besoin de cognition du consommateur. L’intérêt théorique de cet article réside dans la proposition d’un modèle intégrateur. L’intérêt managérial de ce papier est pour les sites hébergeurs : il leur permet de mieux comprendre leurs lecteurs.
À propos des routes cognitives et affectives de l’ e -satisfaction et de l’attitude : Les comportements utilitaires et expérientiels empruntent-ils le même itinéraire ?
Authors: Nasr Imed Ben , Trinquecoste Jean-François
Published: January 2016

Cette recherche propose une analyse des dimensions cognitive et affective de l’expérience de consultation du site web d’une marque. Elle étudie le rôle et la part de ces deux composantes dans la satisfaction globale de l’internaute de même que le rôle modérateur du type de comportement – utilitaire vs expérientiel – dans ce processus. Les tests empiriques du modèle causal confirment la nature duale – à savoir cognitive et affective – de la satisfaction de l’internaute ainsi que le caractère contingent de ce processus. Par ailleurs, l’étude met au jour que le comportement utilitaire fait prévaloir la voie cognitive de l’ e -satisfaction de l’internaute alors que le comportement expérientiel fait prévaloir la voie affective.
Pourquoi payer dans un jeu par navigateur gratuit ? Motivations à jouer et achat d’objets virtuels
Authors: Garnier Marion , Prostak Guillaume
Published: January 2016

Les jeux par navigateur ou sociaux adoptent généralement un modèle de revenus free-to-play associé à la vente d’objets virtuels. Les enjeux en sont toutefois encore mal connus. Cette recherche étudie les motivations à jouer du joueur prêt à payer pour un objet virtuel dans un jeu gratuit par navigateur. La compétition et la socialisation sont identifiées comme étant les principales variables discriminantes et explicatives du profil du joueur prêt à payer.
Les armes d’Éros
Authors: de Biasi Pierre-Marc
Published: January 2016

À l’encontre de la pornographie qui vend et consomme, l’art d’aimer préserve, amplifie et magnifie le désir pour en faire une œuvre vivante. À l’encontre des sectateurs de l’effroi qui le confondent avec Thanatos, Éros, solaire et artiste, est un dieu civilisateur.
Ève pornocrate
Authors: Damien Robert
Published: January 2016

Avec sa verve lucide, Proudhon préfigure le coït de la chair et du marché au cœur du nouveau capitalisme.
Les ciseaux d’Anastasie
Authors: Huyghe François-Bernard
Published: January 2016

Les critères de l’interdit, qui évoluent avec le temps jusqu’à se contredire, nous livrent une radioscopie de l’inconscient collectif.
Érôs et Agapè
Authors: Chédeville Pierre
Published: January 2016

La distinction augustinienne d’Érôs et Agapè nourrit l’histoire de l’Occident, des premières communautés chrétiennes à la fraternité républicaine.
Photo-Porno
Authors: Debray Régis
Published: January 2016

La technique commande. La troublante concordance des temps entre deux néologismes indique tout ce allait bientôt opposer érotisme et pornographie.
Madeleine mise à nu
Authors: Douplitzky Karine
Published: January 2016

Ni pute ni soumise, la servante du Christ ne cesse d’être exposée aux deux traditions nationales qui tantôt l’habillent et tantôt la déshabillent.
À livre ouvert
Authors: Melot Michel
Published: January 2016

Affaire de forme et de matière, le livre-matrice entr’ouvert se prête à l’imaginaire du vice comme aux sensualités de la lecture.
Retours de flamme
Authors: Renucci Clélia
Published: January 2016

La femme de trente ans, et beaucoup plus si affinités.
Le génie pornographique
Authors: Lecarme Jacques
Published: January 2016

Maupassant et Pierre Louÿs ont fait sauter l’ancienne distinction entre érotisme et pornographie. Osons nous souvenir ?
Péripéties d’Histoire d’O
Authors: Pierrat Emmanuel
Published: January 2016

Tribulations d’un futur best-seller. Entre les chicanes de la censure et les paradoxes d’un nouveau féminisme.
Algorithmes de la masturbation
Authors: de La Porte Xavier
Published: January 2016

Ranger, trier, classer : voies et moyens de l’autoérotisme en ligne.
Le mobile transgenres
Authors: Allard Laurence
Published: January 2016

Jouer des troubles de l’identité sexuelle à l’heure de la mobilité numérique.
Pornspace
Authors: Vitali-Rosati Marcello
Published: January 2016

Du pornographique au numérique : homologie normative dans deux espaces contraints.
Amour à mort
Authors: Soriano Paul
Published: January 2016

La technique introduit des choses mortes dans le vivant.
Munchausen Syndrome: A Review of Patient Management
Authors: Wong Lilian , Detweiler Mark B.
Published: January 2016

The management of Munchausen syndrome is fraught with complexities related to legality, ethics, and its inherent nature. An illustrative case of factitious aortic dissection is presented as well as a review of the literature for the management Munchausen syndrome, which includes strategies reported to be effective. Management of Munchausen syndrome requires a high index of suspicion, a good history, and thorough physical examination. Objective illnesses resulting from the factitious behavior should be treated, while avoiding unnecessary procedures. Early referral to a psychiatry team is critical as this may be an empathetic and face-saving approach for the patient. Regularly scheduled appointments, not dependent on the patient's distress level, are associated with improved long-term prognosis. Patients with Munchausen syndrome can suffer considerable iatrogenic morbidity and mortality, and they place immense strain on the health care system. Physicians should be aware of the complexities of these cases, the management options, and the frequent need for psychiatry consultations[Psychiatr Ann. 2016;46(1):66–70.]
Overview and Management of Common Sleep Disorders in Children: A Review for Psychiatrists
Authors: Kazaglis Louis , Molero Helena , Azeem Muhammad Waqar , Khawaja Imran S.
Published: January 2016

Sleep problems are common among children and adolescents, with up to 50% of children experiencing sleep difficulties and as many as 4% receiving a formal sleep disorder diagnosis. Early identification of sleep problems may prevent negative consequences, such as daytime sleepiness, misdiagnosis, learning difficulties, or poor academic performance. This article provides an overview of common sleep disorders in children and adolescents, including common presenting symptoms, diagnosis, and treatment.

[
Psychiatr Ann
. 2016;46(1):39–44.]
Clinical Faculty Management of the Challenges of Being a Guest in Clinical Settings: An Exploratory Study
Authors: Dahlke Sherry , Hannesson Teresa
Published: January 2016

Background:

Clinical experience is a critical component of basic nursing education. Little research has focused on the perspectives of clinical faculty (CF) who engage in practical nursing education in challenging clinical settings associated with increased patient acuity and complexity.

Method:

The aim of this qualitative study was to understand CF's perspectives of what supports and hinders their ability to foster baccalaureate nursing students' clinical education.

Results:

Findings indicate challenges related to CF being viewed as “guests” in the clinical settings, complicating communication with nursing staff about constructive learning experiences. CF receive support from other CF to assist in balancing student priorities and developing relationships with clinical staff .

Conclusion:

CF success was linked to how well they advance the view of students and themselves as being an integral part of the nursing team. Further research is needed to understand how CF use their social capital to advance clinical nursing education. [
J Nurs Educ.
2016;55(2):91–95.]
Patient Preferences for Information on Post-Acute Care Services
Authors: Sefcik Justine S. , Nock Rebecca H. , Flores Emilia J. , Chase Jo-Ana D. , Bradway Christine , Potashnik Sheryl , Bowles Kathryn H.
Published: January 2016

The purpose of the current study was to explore what hospitalized patients would like to know about post-acute care (PAC) services to ultimately help them make an informed decision when offered PAC options. Thirty hospitalized adults 55 and older in a Northeastern U.S. academic medical center participated in a qualitative descriptive study with conventional content analysis as the analytical technique. Three themes emerged: (a) r
eceiving practical information about the services
, (b)
understanding “how it relates to me,”
and (c)
having opportunities to understand PAC options
. Study findings inform clinicians what information should be included when discussing PAC options with older adults. Improving the quality of discharge planning discussions may better inform patient decision making and, as a result, increase the numbers of patients who accept a plan of care that supports recovery, meets their needs, and results in improved quality of life and fewer readmissions.

[Res Gerontol Nurs. 2016; 9(4):175–182.]
La casa y el ajuar de la familia Coronel a través de un inventario de bienes del siglo XVI
Authors: De la Peña Barroso Efrén
Published: January 2016

Desde hace ya varios años estamos trabajando en la figura de don Abraham Seneor/Fernán Pérez Coronel y su descendencia, sobre todo por la vía de su hijo Íñigo López Coronel. En esta ocasión, estudiaremos la estructura espacial de su casa, sus bienes muebles y el ajuar de esta rama familiar a través de un inventario de bienes realizado en sus «casas principales» de la ciudad de Segovia en el año 1522. Este inventario nos permitirá acercarnos a los niveles de riqueza, a la escasa inversión en productos de lujo y al conocimiento de gran parte del ajuar de esta importante familia de judeoconversos segovianos.
Properties and Performance of Cube-Based Multiprocessor Architectures
Authors: Samad Abdus , Siddiqui Jamshed , Khan Zaki Ahmed
Published: January 2016

Parallel architectures provide the possibility of solving highly computational parallel applications in a variety of ways. Numerous interconnection topologies have been designed to achieve the desired performance. Nevertheless, the actual performance is far below the expectation of users when executing parallel applications on a particular multiprocessor network. This paper presents the performance study on a special class of parallel architectures known as cube based multiprocessor architectures. It describes the issues and challenges related to the design of cube-based architectures. The issues related to the design of highly parallel system such as scalability, complexity of the system and mapping of parallel application on to it are discussed. Furthermore, the problem of routing between nodes has been analyzed along with the topological properties of cube-based architectures. Simulation results are obtained by applying task scheduling algorithm on various multiprocessor networks. The comparative study implies the various aspects while designing an efficient multiprocessor interconnection network with optimal scheduling algorithm.
Development of an Interactive GUI Tool for Thyroid Uptake Studies using Gamma Camera
Authors: Shiva Amruthavakkula , Sai Vignesh T. , Siva Subramaniyan V. , Rajamani Kumar T. , Siva Sankara Sai S.
Published: January 2016

Thyroid uptake study is a technique that requires injection of a radio-isotope/radiotracer emitting gamma rays into the blood stream of the patient to study the functionality of thyroid in accordance to its uptake. The Gamma Camera uses a LEAP (Low Energy All Purpose) collimator which handles only photons emitted from radio-isotopes having lower emission energies. Technetium-99m is used whose energy of emission is around 140 keV. For a typical Thyroid Uptake Probe where Iodine-131 having greater emission energy of 364 keV is preferred, but existing Thyroid Uptake software is not feasible. Therefore an Interactive GUI (Graphical User Interface) tool was developed using Fiji for determination of tracer uptake by manually drawing the Region of Interest around left and right thyroid lobes separately. Developed tool was tested on 35 real time thyroid cases and the uptake values obtained are compared with those obtained from the existing software tool.
A Prospective Study on Electronystagmography (ENG) to Detect Vestibular Disorders Using Simplified GUI
Authors: Sriraam Natarajan , Shivakumar Namitha , R. Poonam , Dharmappa Y. Shamanth
Published: January 2016

Electronystagmography (ENG) refers to the clinical test that monitors the involuntary movements of the eye due to an effect called Nystagmus. The procedure is also used to detect disorders of inner ear that are responsible for vertigo and imbalance. In clinical practice, various tests such as caloric test, calibration test, gaze test, pendulum tracking test, opto-kinetics test, positional test and Rhomberg's test were generally performed to diagnose the vestibular dysfunction. Such procedure were found to be very time consuming and cumbersome for the patients. This prospective study investigates the screening of the vestibular dysfunction by integrating the readymade hardware unit with a compact software tool to reduce the clinical test duration. Electrooculography (EOG) based physiological signal is used to record the eye movements during ENG. The proposed research study aims in developing a simplified procedure towards the analysis of ENG signals. The proposed methodology not only helps in reducing the time for performing such procedures but also helps in reducing the discomforts to the subject. The procedure showed the effectiveness in terms of recognizing the required biomarkers for various activities. For the pilot study, 25 healthy male and 25 female test subjects in the age group of 19-21 years were considered. Experimental set up was arranged to record EOG signals with all activities with time duration of 10 minutes. Two features namely spike rhythmicity and auto regressive feature using Burg's method were extracted from the recorded raw signal. A typical Elman feedback neural network was introduced to perform the binary classification to identify the pattern, (Nystagmus left ear-Nystagmus right ear, Vertical-Horizontal and Gaze-Pendulum) respectively. An overall classification accuracy (CA) of 93.8% was achieved that confirms the effectiveness of the test required to detect nystagmus. The system needs to be validated with large experimental data to confirm the accuracy for clinical screening and validation.
The Effects of Customer Perceived Employee Support on Self-Efficacy and Behavioral Intentions
Authors: Liu Shunzhong
Published: January 2016

The provision of self-service technologies in the service industry has increased rapidly in recent years. Despite the advantages with increased self-service technologies, removing the frontline employee support can influence customer behavioral intentions towards the service providers. According to social support theory and social cognitive theory, this study develops a conceptual model to investigate how and when perceived employee support affects customer behavioral intentions. The model is tested using a factorial between-subjects experimental design in the self-service environment of China's bank. The results show that the relationship between perceived employee support and customer self-efficacy is moderated by forced use and service complexity. Moreover, the results indicate that self-efficacy is a mediator that explains how perceived employee support may come to be associated with customer behavioral intentions towards the service providers.
A New Instance-Based Approach for Ontology Alignment
Authors: Khiat Abderrahmane , Benaissa Moussa
Published: January 2016

Due to the increasing number of information sources available on the web and their distribution and heterogeneity, ontology alignment became a very important and inevitable problem to resolve in order to ensure semantic interoperability between these sources. Instance-based ontology alignment represents a very promising technique to find semantic correspondences between entities of different ontologies. In practice, two situations may arise: ontologies that share common instances and those share few or do not share common instances. In this paper, the authors describe a new approach to manage the latter case. This approach exploits the reasoning on ontologies in order to create a corpus of common instances. They have used the Biblio and Finance tests of Benchmark series of the OAEI 2012 evaluation campaign to evaluate the performance of their approach. The results obtained show the good performance of the authors' approach compared to ontology alignment systems and improves significantly the instance-based and reasoning-based methods.
Incremental Ontology Population and Enrichment through Semantic-based Text Mining
Authors: Gillani Saira , Ko Andrea
Published: January 2016

Higher education and professional trainings often apply innovative e-learning systems, where ontologies are used for structuring domain knowledge. To provide up-to-date knowledge for the students, ontology has to be maintained regularly. It is especially true for IT audit and security domain, because technology is changing fast. However manual ontology population and enrichment is a complex task that require professional experience involving a lot of efforts. The authors' paper deals with the challenges and possible solutions for semi-automatic ontology enrichment and population. ProMine has two main contributions; one is the semantic-based text mining approach for automatically identifying domain-specific knowledge elements; the other is the automatic categorization of these extracted knowledge elements by using Wiktionary. ProMine ontology enrichment solution was applied in IT audit domain of an e-learning system. After ten cycles of the application ProMine, the number of automatically identified new concepts are tripled and ProMine categorized new concepts with high precision and recall.