bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE LONG-TERM DYNAMICAL EVOLUTION OF DISK-FRAGMENTED MULTIPLE SYSTEMS IN THE SOLAR NEIGHBORHOOD
Authors: Li Yun , Kouwenhoven M. B. N. , Stamatellos D. , Goodwin Simon P. 
Published: November 2016

ABSTRACT
The origin of very low-mass hydrogen-burning stars, brown dwarfs (BDs), and planetary-mass objects (PMOs) at the low-mass end of the initial mass function is not yet fully understood. Gravitational fragmentation of circumstellar disks provides a possible mechanism for the formation of such low-mass objects. The kinematic and binary properties of very low-mass objects formed through disk fragmentation at early times (<10 Myr) were discussed in our previous paper. In this paper we extend the analysis by following the long-term evolution of disk-fragmented systems up to an age of 10 Gyr, covering the ages of the stellar and substellar populations in the Galactic field. We find that the systems continue to decay, although the rates at which companions escape or collide with each other are substantially lower than during the first 10 Myr, and that dynamical evolution is limited beyond 1 Gyr. By t = 10 Gyr, about one third of the host stars are single, and more than half have only one companion left. Most of the other systems have two companions left that orbit their host star in widely separated orbits. A small fraction of companions have formed binaries that orbit the host star in a hierarchical triple configuration. The majority of such double-companion systems have internal orbits that are retrograde with respect to their orbits around their host stars. Our simulations allow a comparison between the predicted outcomes of disk fragmentation with the observed low-mass hydrogen-burning stars, BDs, and PMOs in the solar neighborhood. Imaging and radial velocity surveys for faint binary companions among nearby stars are necessary for verification or rejection of the formation mechanism proposed in this paper.
RADIATIVE TRANSFER MODELS FOR GAMMA-RAY BURSTS
Authors: Vurm Indrek , Beloborodov Andrei M. 
Published: November 2016

ABSTRACT
We present global radiative transfer models for heated relativistic jets. The simulations include all relevant radiative processes, starting deep in the opaque zone and following the evolution of radiation to and beyond the photosphere of the jet. The transfer models are compared to three gamma-ray bursts GRB 990123, GRB 090902B, and GRB 130427A, which have well-measured and different spectra. The models provide good fits to the observed spectra in all three cases, and we obtain estimates for the jet magnetization parameter

and the Lorentz factor Γ. In the small sample of three bursts,

varies between 0.01 and 0.05, and Γ varies between 300 and 1200.
MagAO IMAGING OF LONG-PERIOD OBJECTS (MILO). II. A PUZZLING WHITE DWARF AROUND THE SUN-LIKE STAR HD 11112
Authors: Rodigas Timothy J. , Bergeron P. , Simon Amélie , Arriagada Pamela , Faherty Jacqueline K. , Anglada-Escudé Guillem , Mamajek Eric E. , Weinberger Alycia , Butler R. Paul , Males Jared R. , Morzinski Katie , Close Laird M. , Hinz Philip M. , Bailey Jeremy , Carter Brad , Jenkins James S. , Jones Hugh , O’Toole Simon , Tinney C. G. , Wittenmyer Rob , Debes John 
Published: November 2016

ABSTRACT
HD 11112 is an old, Sun-like star that has a long-term radial velocity (RV) trend indicative of a massive companion on a wide orbit. Here we present direct images of the source responsible for the trend using the Magellan Adaptive Optics system. We detect the object (HD 11112B) at a separation of 2.″2 (100 au) at multiple wavelengths spanning 0.6–4 μm and show that it is most likely a gravitationally bound cool white dwarf. Modeling its spectral energy distribution suggests that its mass is 0.9–1.1 M
⊙, which corresponds to very high eccentricity, near edge-on orbits from a Markov chain Monte Carlo analysis of the RV and imaging data together. The total age of the white dwarf is >2σ, which is discrepant with that of the primary star under most assumptions. The problem can be resolved if the white dwarf progenitor was initially a double white dwarf binary that then merged into the observed high-mass white dwarf. HD 11112B is a unique and intriguing benchmark object that can be used to calibrate atmospheric and evolutionary models of cool white dwarfs and should thus continue to be monitored by RV and direct imaging over the coming years.
SOLAR ERUPTION AND LOCAL MAGNETIC PARAMETERS
Authors: Lee Jeongwoo , Liu Chang , Jing Ju , Chae Jongchul 
Published: November 2016

ABSTRACT
It is now a common practice to use local magnetic parameters such as magnetic decay index for explaining solar eruptions from active regions, but there can be an alternative view that the global properties of the source region should be counted as a more important factor. We discuss this issue based on Solar Dynamics Observatory observations of the three successive eruptions within 1.5 hr from the NOAA active region 11444 and the magnetic parameters calculated using the nonlinear force-free field model. Two violent eruptions occurred in the regions with relatively high magnetic twist number (0.5–1.5) and high decay index (0.9–1.1) at the nominal height of the filament (12″) and otherwise a mild eruption occurred, which supports the local-parameter paradigm. Our main point is that the time sequence of the eruptions did not go with these parameters. It is argued that an additional factor, in the form of stabilizing force, should operate to determine the onset of the first eruption and temporal behaviors of subsequent eruptions. As supporting evidence, we report that the heating and fast plasma flow continuing for a timescale of an hour was the direct cause for the first eruption and that the unidirectional propagation of the disturbance determined the timing of subsequent eruptions. Both of these factors are associated with the overall magnetic structure rather than local magnetic properties of the active region.
La « quenelle » d'Anelka
Authors: Hochmann Thomas 
Published: November 2016

Le geste de la quenelle, inventé par Dieudonné, pose des problèmes d’interprétation particuliers. Symbole antisémite pour certains, il n’est qu’une provocation « anti-système » pour d’autres. La réalisation de ce geste par le footballeur Nicolas Anelka a donné l’occasion aux instances disciplinaires du football anglais d’analyser en détail les implications de la quenelle. Mais l’intérêt de la décision rendue dépasse largement les faits de l’espèce. Elle permet de réfléchir sur les difficultés juridiques soulevées par les tactiques d’insinuation qu’utilise la « nouvelle vague » du discours de haine, si l’on veut bien appeler ainsi la mouvance qui s’inscrit dans le sillage de Dieudonné.
Économie politique de la communication et théorie critique des médias
Authors: Magis Christophe 
Published: November 2016

Cet article s’intéresse à deux traditions de recherche critique en communication, ainsi qu’à leurs rapports : d’un côté la Théorie critique des médias de l’École de Francfort et, de l’autre, l’économie politique de la communication. S’il est communément admis un héritage qu’emprunte la seconde à la première, c’est souvent de manière assez peu investie épistémologiquement, ce qui mène quelquefois les travaux à des ambiguïtés quant à ce que l’économie politique de la communication, notamment dans ses traditions anglo-françaises et québécoise, reprend des concepts et épistémologies de la Théorie critique. En s’intéressant à deux éléments spécifiques d’importance pour les deux approches (rapport au matérialisme, place et rôle des productions culturelles et médiatiques), nous proposons d’investir épistémologiquement cet héritage, au-delà des simples effets d’affichage habituels.
Par-delà la contrainte politique ?
Authors: Chupin Ivan , Daucé Françoise 
Published: November 2016

La question des engagements politiques des journalistes semble, par définition, propre aux sociétés démocratiques. Pourtant, elle se pose aussi dans des contextes politiques contraints, comme le montre l’exemple de la Russie contemporaine. Depuis l’arrivée au pouvoir de V. Poutine en 2000, les recherches en sociologie des médias font généralement état d’une polarisation de l’espace médiatique entre, d’un côté, des titres dominants acquis à la ligne interprétative du pouvoir et de l’autre, des rédactions critiques et alternatives marginalisées. Ce clivage suggère des assignations politiques fortes des journalistes dans l’espace médiatique. Or, une enquête au plus près des acteurs montre paradoxalement l’instabilité de leurs carrières professionnelles et des possibilités, pour certains d’entre eux, de passage d’un pôle éditorial à l’autre. Ces trajectoires énigmatiques témoignent d’une mise à distance de la politique au profit d’autres considérations (économiques, techniques, amicales…) pour justifier des bifurcations professionnelles dans l’espace médiatique russe. Au-delà de ce cas d’étude, elles invitent à la réflexion sur l’affaiblissement des assignations politiques dans les médias contemporains.
Les parachutes dorés et autres contrats en or
Authors: Chaigneau Pierre 
Published: November 2016

Hautement médiatisés, les « parachutes dorés » ont souvent été vivement critiqués. En effet, il peut sembler difficilement justifiable de payer généreusement ceux qui se font mettre à la porte en raison de leur incompétence et d’ainsi récompenser l’échec. Et si ces fameux contrats de séparation avaient des vertus insoupçonnées ?
Les énergies vertes : sommes-nous sur la bonne voie ?
Authors: Normandin François 
Published: November 2016

Alors que les réserves mondiales de combustibles fossiles s’épuisent, le choix des énergies renouvelables apparaît désormais non plus comme une option mais comme une nécessité. L’humanité progresse-t-elle à ce chapitre ? Quels sont les États qui ont déjà fait un pas en avant à l’approche du virage vers les énergies vertes ? Vos réponses à ces questions en un clin d’œil !
Entreprises en démarrage : des outils pour garder le cap
Authors: Théoret Claude , Goldapple Naomi 
Published: November 2016

Intel l’a conçu et Google l’utilise pour son personnel. Comment ce système d’objectifs et de résultats clés, mieux connu sous l’acronyme OKR, peut-il aider les nouvelles entreprises à forte croissance à mieux se structurer ?
Êtes-vous un gestionnaire digne de confiance ?
Authors: Bertholet Jean-François , Gaudet Marie-Claude 
Published: November 2016

Nombreuses sont les formations destinées aux gestionnaires sur les thèmes du leadership, de la communication ou de la reconnaissance. Mais qui parmi nos lecteurs a déjà suivi une formation sur la confiance ? Très peu d’entre vous, n’est-ce pas ? Pourtant, le prix à payer est élevé lorsque les employés sont méfiants envers leur gestionnaire et leur employeur.
Les imports idéologiques dans les groupes : leurs fonctions et leurs limites face à des vécus de terreur sociétale
Authors: Duez Bernard , Duez Christiane 
Published: November 2016

À partir de la comparaison entre les formes de présence de l’idéologique dans les groupes psychanalytiques, cet article montre comment ces éléments idéologiques ont une fonction d’autoreprésentation qui permet le déploiement du processus psychanalytique. Dans des situations traumatiques sociétales, les imports idéologiques deviennent menaçants et les groupes convoquent alors le mode originaire de l’autoengendrement en présence de l’autre. Il montre comment les fonctionnements psychiques des clans dans les cités relèvent d’un même mouvement, mais qui s’effondre selon le mode de l’échange du dommage généralisé.	En recoupant ces propositions, à partir de l’exemple de l’abstinence, il conclut en questionnant le statut et la fonction des dispositifs psychanalytiques en rapport avec l’économie psychique sociétale.
SYNTAX Score in Patients with High Computed Tomography Coronary Calcium Score
Authors: Hegde Madhav , Rajendran Ravindran 
Published: November 2016

Objectives:
To study the conventional coronary angiogram ( CA) findings in patients with high coronary calcium on multidetector computed tomogram.

Materials and Methods:
Fifty patients with coronary calcium high enough in its extent and location to interfere with the interpretation of a contrast-filled coronary artery for a significant lesion were studied with conventional CA. Framingham risk score (FRS), computed tomography (CT) coronary calcium score (CCS), and SYNTAX score (SS) from the CA were calculated by separate investigators who were blinded to other scores. Effectively, 250 coronary arteries (left main, left anterior descending, left circumflex, and right coronary artery and posterior descending artery in each subject) with calcium scores were studied for lesions on CA.

Results:
Thirty-five subjects had high FRS, 10 had intermediate FRS, and 5 had low FRS. Eight subjects of 25 (32%) with CCS between 350 and 1000 had no significant coronary artery disease (CAD). Overall, the CCS and the SS had a strong agreement with each other (r = 0.68, P < 0.01) that persisted in those with very high scores >1000 (r = 0.55, P < 0.01, n = 30), but only a nonsignificant weak correlation with scores between 350 and 1000 (r = 0.1, P = 0.62, n = 20). Individual vessel calcium scores correlated strongly for the presence of any lesion (r = 0.52, P < 0.01) in the same artery but only weakly for a significant lesion (r = 0.29, P = 0.05).

Conclusion:
High CT CCS in this cohort of intermediate to high (Framingham score) risk patients correlated strongly with the subject's global burden of the CAD as derived by the SS, more so for subjects with very high scores. Similarly, CCS correlated strongly with the presence of any lesion but only weakly for a significant stenosis; also, about one-third of patients with CCS between 350 and 1000 may not have significant disease on conventional CA.
Do Smoking Bans Always Hurt the Gaming Industry? Differentiated Impacts on the Market Value of Casino Firms in Macao
Authors: Zhang Jing Hua , Tam Kwo Ping , Zhou Nan 
Published: November 2016

Abstract
The gaming economy has expanded rapidly in East Asia over the past decade. Despite the known public health hazards of secondhand smoking, smoking bans in casinos remain controversial due to concerns over the potential economic harm to casino firms. Applying an event study, the authors examine the abnormal returns of casino stocks in response to three unexpected smoking ban announcements from 2011 to 2015 in Macao. Their analysis reveals that these announcements were associated with differentiated abnormal returns of casino stocks. Stocks of traditional casinos suffered abnormal losses of 0.58–3%, while the Las Vegas themed casinos enjoyed positive abnormal returns of up to 3%. Furthermore, the authors find that low air quality in gaming venues and high dependence on gaming revenues are associated with abnormal losses, while positive management initiatives are significantly correlated with positive abnormal returns. The findings of this study provide a full picture of the impacts of smoking bans on casinos and thus will be a useful policy references for the Macao government, as well as for the rapidly growing gaming industry in Asia and developing economies elsewhere.
BVOC emissions from English oak (Quercus robur) and European beech (Fagus sylvatica) along a latitudinal
gradient
Authors: van Meeningen Ylva , Schurgers Guy , Rinnan Riikka , Holst Thomas 
Published: November 2016

Abstract. English oak (Quercus robur) and European beech (Fagus sylvatica) are amongst the most common tree species growing in Europe, influencing the annual biogenic volatile organic compound (BVOC) budget in this region. Studies have shown great variability in the emissions from these tree species, originating from both genetic variability and differences in climatic conditions between study sites. In this study, we examine the emission patterns for English oak and European beech in genetically identical individuals and the potential variation within and between sites. Leaf scale BVOC emissions, net assimilation rates and stomatal conductance were measured at the International Phenological Garden sites of Ljubljana (Slovenia), Grafrath (Germany) and Taastrup (Denmark). Sampling was conducted during three campaigns between May and July 2014. Our results show that English oak mainly emitted isoprene whilst European beech released monoterpenes. The relative contribution of the most emitted compounds from the two species remained stable across latitudes. The contribution of isoprene for English oak from Grafrath and Taastrup ranged between 92 and 97 % of the total BVOC emissions, whilst sabinene and limonene for European beech ranged from 30.5 to 40.5 and 9 to 15 % respectively for all three sites. The relative contribution of isoprene for English oak at Ljubljana was lower (78 %) in comparison to the other sites, most likely caused by frost damage in early spring. The variability in total leaf-level emission rates from the same site was small, whereas there were greater differences between sites. These differences were probably caused by short-term weather events and plant stress. A difference in age did not seem to affect the emission patterns for the selected trees. This study highlights the significance of within-genotypic variation of BVOC emission capacities for English oak and European beech, the influence of climatic variables such as temperature and light on emission intensities and the potential stability in relative compound contribution across a latitudinal gradient.
A local particle filter for high-dimensional geophysical systems
Authors: Penny Stephen G. , Miyoshi Takemasa 
Published: November 2016

Abstract. A local particle filter (LPF) is introduced that outperforms traditional ensemble Kalman filters in highly nonlinear/non-Gaussian scenarios, both in accuracy and computational cost. The standard sampling importance resampling (SIR) particle filter is augmented with an observation-space localization approach, for which an independent analysis is computed locally at each grid point. The deterministic resampling approach of Kitagawa is adapted for application locally and combined with interpolation of the analysis weights to smooth the transition between neighboring points. Gaussian noise is applied with magnitude equal to the local analysis spread to prevent particle degeneracy while maintaining the estimate of the growing dynamical instabilities. The approach is validated against the local ensemble transform Kalman filter (LETKF) using the 40-variable Lorenz-96 (L96) model. The results show that (1) the accuracy of LPF surpasses LETKF as the forecast length increases (thus increasing the degree of nonlinearity), (2) the cost of LPF is significantly lower than LETKF as the ensemble size increases, and (3) LPF prevents filter divergence experienced by LETKF in cases with non-Gaussian observation error distributions.
Echocardiographic Detection of Left Ventricular Thrombus in Patients Undergoing Heartmate II Left Ventricular Assist Device Implantation
Authors: Schubmehl Heidi B. , Tchantchaleishvili Vakhtang , Storoznsky Eugene , Alexis Jeffrey D. , Chen Leway , Massey Howard T. 
Published: November 2016

Purpose Transthoracic (TTE) and transesophageal echocardiograms (TEE) are considered accurate in detecting the presence of left ventricular (LV) thrombus. A persistent LV thrombus poses risks of pump thrombosis and stroke in LVAD recipients. The relationship between pre-operative echocardiography and intraoperative findings at LVAD implantation has not previously been studied. Methods A retrospective review examined all patients undergoing LVAD placement or exchange from October 2011 to March 2014. Pre-Operative TTE and TEE data were validated with presence of LV thrombus during the direct inspection at the time of LVAD placement, and the findings were analyzed quantitatively. Results Between October 2011 and March 2014, 99 patients underwent a total of 107 LVAD implants. Pre-Operative TTE was available in 93 (86.9%) cases, while pre-operative TEE was available in 37 cases (34.6%). On pre-operative TTE, LV thrombus was correctly identified in only two cases, while on pre-operative TEE no cases of LV thrombus were identified correctly, and there were 2 false positive reports. Intraoperative inspection revealed presence of LV thrombus in 14 cases. The sensitivity of pre-operative TTE was 16.7% and the specificity 100% in detecting LVT, compared to 0% and 93.8%, respectively, for TEE. Conclusions Pre-Operative echocardiogram offers low accuracy for presence of LV thrombus. Overall, the sensitivity is too low to reliably exclude thrombus. This could have significant implications in planning off-pump LVAD exchange as thrombus could be missed. More data are necessary to determine whether this could have significant effects on thromboembolic complications and survival.
Severe dysphagia due to rapidly progressive pharyngoesophageal segment stenosis in systemic sclerosis
Authors: Jeffery Caroline C. , Jung Michelle 
Published: November 2016

Purpose To describe a case of pharyngo-esophageal segment involvement by systemic sclerosis resulting in severe and rapid progressive dysphagia refractory to management. Case report A 69-year-old female with known systemic sclerosis presented with progressive solid and liquid food dysphagia. Serial video fluoroscopic swallowing studies demonstrated progressive hypopharyngeal and upper esophageal sphincter stenosis along with oropharyngeal dysphagia. Attempted esophagogastroduodenoscopy by gastroenterology using a 5.4 mm diameter gastroscope failed to pass through the hypopharynx. Operative laryngoscopy demonstrated a 3 mm hypopharyngeal lumen extending for 2 cm into the cervical esophagus. The stenosis was cannulated and dilated to 10 mm, but remained refractory to further dilations. The patient was unable to maintain any oral intake and required percutaneous gastrostomy placement. Conclusions Involvement of the pharyngo-esophageal segment is an underreported cause of severe dysphagia in patients with systemic sclerosis. Early recognition is necessary to prevent complete stenosis.
Expression of CD74 in Invasive Breast Carcinoma: Its Relation to Nottingham Prognostic Index, Hormone Receptors, and HER2 Immunoprofile
Authors: Hasby Eiman Adel , Khalifa Rana Adel 
Published: November 2016

Purpose To study the immunohistochemical expression of CD74 in series of invasive breast carcinomas classified according to their estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2) immunoprofile and explore its correlation to Nottingham Prognostic Index (NPI) and tumor pathologic stage to determine if it has a prognostic value. Methods A total of 160 cases of mammary carcinoma were classified broadly according to their ER, PR, and HER2 expression into luminal, HER2-positive, and triple-negative groups. The NPI was calculated and pathologic stage was recorded for each individual case and cases were classified into different prognostic groups. The CD74 expression was evaluated immunohistochemically and correlated to different prognostic variables. Results The CD74 immunohistochemical expression in invasive breast carcinoma was significantly higher in triple-negative tumors, higher tumor grades, presence of lymph nodal metastasis, higher tumor stages, and higher NPI scores. Conclusions The CD74 might be a useful prognostic indicator predicting poor outcome of patients with breast carcinoma. Its consistent expression in triple-negative breast carcinomas points to the need of further studies to test the possibility if it can be targeted in treatment of breast carcinoma, especially in such groups.