bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hydrodynamic Stability Analysis of the Neutron Star Core
Authors: van Eysden C. A. , Link Bennett 
Published: September 2018

Abstract
Hydrodynamic instabilities and turbulence in neutron stars have been suggested to be related to observable spin variations in pulsars, such as spin glitches, timing noise, and precession (nutation). Accounting for the stabilizing effects of the stellar magnetic field, we revisit the issue of whether the inertial modes of a neutron star can become unstable when the neutron and proton condensates flow with respect to one another. The neutron and proton condensates are coupled through the motion of imperfectly pinned vorticity (vortex slippage) and vortex-mediated scattering (mutual friction). Previously-identified two-stream instabilities that occur when the two condensates rotate with respect to one another in the outer core are stabilized by the toroidal component of the magnetic field. This stabilization occurs when the Alfvén speed of the toroidal component of the magnetic field becomes larger than the relative rotational velocity of the condensates, corresponding to toroidal field strengths in excess of ≃1010 G. In contrast with previous studies, we find that spin-down of a neutron star under a steady torque is stable. The Donnelly–Glaberson instability is not stabilized by the magnetic field and could play an important role if neutron stars undergo precession.
A Statistical Inference Method for Interpreting the CLASP Observations
Authors: Štěpán J. , Bueno J. Trujillo , Belluzzi L. , Ramos A. Asensio , Sainz R. Manso , Alemán T. del Pino , Casini R. , Kano R. , Winebarger A. , Auchère F. , Ishikawa R. , Narukage N. , Kobayashi K. , Bando T. , Katsukawa Y. , Kubo M. , Ishikawa S. , Giono G. , Hara H. , Suematsu Y. , Shimizu T. , Sakao T. , Tsuneta S. , Ichimoto K. , Cirtain J. , Champey P. , Pontieu B. De , Carlsson M. 
Published: September 2018

Abstract
On 2015 September 3, the Chromospheric Lyman-Alpha SpectroPolarimeter (CLASP) successfully measured the linear polarization produced by scattering processes in the hydrogen Lyα line of the solar disk radiation, revealing conspicuous spatial variations in the Q/I and U/I signals. Via the Hanle effect, the line-center Q/I and U/I amplitudes encode information on the magnetic field of the chromosphere–corona transition region, but they are also sensitive to the three-dimensional structure of this corrugated interface region. With the help of a simple line-formation model, here we propose a statistical inference method for interpreting the Lyα line-center polarization observed by CLASP.
Reverberation Mapping of Luminous Quasars at High z
Authors: Lira Paulina , Kaspi Shai , Netzer Hagai , Botti Ismael , Morrell Nidia , Mejía-Restrepo Julián , Sánchez-Sáez Paula , Martínez-Palomera Jorge , López Paula 
Published: September 2018

Abstract
We present reverberation mapping (RM) results for 17 high-redshift, high-luminosity quasars with good-quality R-band and emission-line light curves. We are able to measure statistically significant lags for Lyα (11 objects), Si iv (5 objects), C iv (11 objects), and C iii] (2 objects). Using our results and previous lag determinations taken from the literature, we present an updated C iv radius–luminosity relation and provide for the first time radius–luminosity relations for Lyα, Si iv, and C iii]. While in all cases the slopes of the correlations are statistically significant, the zero points are poorly constrained because of the lack of data at the low-luminosity end. We find that the emissivity-weighted distances from the central source of the Lyα, Si iv, and C iii] line-emitting regions are all similar, which corresponds to about half that of the Hβ region. We also find that 3/17 of our sources show an unexpected behavior in some emission lines, two in the Lyα light curve and one in the Si iv light curve, in that they do not seem to follow the variability of the UV continuum. Finally, we compute RM black hole (BH) masses for those quasars with highly significant lag measurements and compare them with C iv single-epoch (SE) mass determinations. We find that the RM-based BH mass determinations seem smaller than those found using SE calibrations.
Physical Properties of II Zw 40's Super Star Cluster and Nebula: New Insights and Puzzles from UV Spectroscopy
Authors: Leitherer Claus , Byler Nell , Lee Janice C. , Levesque Emily M. 
Published: September 2018

Abstract
We analyze far-ultraviolet spectra and ancillary data of the super star cluster SSC-N and its surrounding H ii region in the nearby dwarf galaxy II Zw 40. From the ultraviolet spectrum, we derive a low internal reddening of E(B − V) = 0.07 ± 0.03, a mass of (9.1 ± 1.0) × 105
M
⊙, a bolometric luminosity of (1.1 ± 0.1) × 109
L
⊙, a number of ionizing photons of (6 ± 2) × 1052 s−1, and an age of (2.8 ± 0.1) Myr. These parameters agree with the values derived from optical and radio data, indicating no significant obscured star formation, absorption of photons by dust, or photon leakage. SSC-N and its nebulosity are an order of magnitude more massive and luminous than 30 Doradus and its ionizing cluster. Photoionization modeling suggests a high ionization parameter and a C/O ratio where C is between primary and secondary. We calculate diagnostic emission-line ratios and compare SSC-N to local star-forming galaxies. The SSC-N nebula does not coincide with the locus defined by local galaxies. Rather, it coincides with the location of “Green Pea” galaxies, objects that are often considered nearby analogs of the galaxies reionizing the universe. Most stellar features are well reproduced by synthetic spectra. However, the SSC-N cluster has strong, broad, stellar He ii
λ1640 emission that cannot be reproduced, suggesting a deficit of He-enhanced stars with massive winds in the models. We discuss possible sources for the broad He ii emission, including very massive stars and/or enhanced mixing processes.
Possible Counterrotation between the Disk and Protostellar Envelope around the Class I Protostar IRAS 04169+2702
Authors: Takakuwa Shigehisa , Tsukamoto Yusuke , Saigo Kazuya , Saito Masao 
Published: September 2018

Abstract
We present results from our Submillimeter Array (SMA) observations and data analyses of the SMA archival data of the Class I protostar IRAS 04169+2702. The high-resolution (∼0.″5) 13CO (3–2) image cube shows a compact (r ≲ 100 au) structure with a northwest (blue) to southeast (red) velocity gradient, centered on the 0.9 mm dust continuum emission. The direction of the velocity gradient is orthogonal to the axis of the molecular outflow as seen in the SMA 12CO (2–1) data. A similar gas component is seen in the SO (65–54) line. On the other hand, the C18O (2–1) emission traces a more extended (r ∼ 400 au) component with the opposite, northwest (red) to southeast (blue) velocity gradient. Such opposite velocity gradients in the different molecular lines are also confirmed from direct fitting to the visibility data. We have constructed models of a forward-rotating and counterrotating Keplerian disk and a protostellar envelope, including the SMA imaging simulations. The counterrotating model could better reproduce the observed velocity channel maps, although we could not obtain statistically significant fitting results. The derived model parameters are as follows: Keplerian radius of 200 au, central stellar mass of 0.1 M
⊙, and envelope rotational and infalling velocities of 0.20 and 0.16 km s−1, respectively. One possible interpretation for these results is the effect of the magnetic field in the process of disk formation around protostars, i.e., the Hall effect.
Religion, État-Nation, sécularisme
Authors: Asad Talal , Amer Meziane Mohamed 
Published: September 2018

L’islamisme est-il une forme religieuse de nationalisme ? Asad répond en montrant que l’islamisme et le nationalisme partagent un même souci de l’État moderne. Ils se différencient néanmoins profondément dès que l’on envisage les modalités de ce rapport. L’islamisme résulte d’une traduction de la tradition qu’il investit dans une situation dominée par l’État moderne et par une politisation des sphères sociales qu’il régule. Il entre ainsi en concurrence avec le marxisme sur le terrain de l’antiétatisme.
Marxismes et islams : religion et politique
Authors: Achcar Gilbert , Ducange Jean-Numa 
Published: September 2018

Seule la démarche matérialiste en histoire permet de réfuter radicalement les essentialismes, tel que « l’orientalisme » en dépit de la critique infondée de Marx par Edward Said. L’attitude politique de Marx et Engels envers la religion reste d’actualité. Cependant, la tradition marxiste est déficitaire dans le domaine de la sociologie de la religion. Il faut intégrer d’autres apports, dont le concept durkheimien d’anomie, pour comprendre la résurgence du religieux contemporaine du tournant néolibéral. Tandis que le christianisme des origines se prête facilement à une lecture de gauche, la théologie islamique, et notamment sa version ultraorthodoxe propagée par le royaume saoudien, favorise une lecture intégriste combattante. Il est périlleux pour les marxistes de se placer sur le terrain de l’exégèse en islam au lieu de s’en tenir à la séparation entre politique et religion.
Plan et marché : les défis de l’accumulation à Cuba
Authors: Leleu Jérôme 
Published: September 2018

Le développement du secteur privé et de la régulation par le marché à Cuba depuis dix ans questionne le projet de construction socialiste encore prôné par le pouvoir. Or, la concurrence inévitable entre le secteur d’État « socialiste » et le secteur privé marchand et capitaliste peut réduire à néant ce projet. En effet, la coexistence pacifique entre ces deux secteurs est illusoire. L’objectif de cet article est de mettre en évidence les modifications nécessaires des politiques économiques dans ce nouveau contexte et de souligner l’importance d’appréhender le secteur productif privé comme un outil temporaire, permettant, à travers l’aliénation d’une partie de son surproduit, le développement du secteur socialiste.
Valeur d’usage et signifiant : notes pour une théorie unifiée
Authors: Abduca Ricardo 
Published: September 2018

Cet article explore un parallèle entre deux innovations fondatrices des épistémès contemporaines, celles de Marx et de Saussure, en constatant l’isomorphisme entre les concepts de valeur d’usage et de signifiant. Après un rapide repérage de l’emploi du terme « valeur d’usage » dans la tradition marxiste, on examine la valeur d’usage comme corps, plutôt que comme besoin ou fonction utile. En considérant le concept de valeur d’usage au prisme de celui de signifiant, on met à preuve les questions de l’arbitraire, de l’indivisible, du versatile. L’auteur observe que les deux concepts désignent des moments d’une activité : maillons d’une chaîne. Les chaînes signifiantes auraient un rôle fondamental, comme automatisme de répétition, dans la reproduction sociale.
Marcuse en mai
Authors: Raulet Gérard 
Published: September 2018

Avant 1968, un seul ouvrage, très critique, avait été consacré à Marcuse. Même les leaders du mouvement étudiant semblent tout ignorer de sa pensée. Pourtant, la parution de L’Homme unidimensionnel au plus fort des « événements », bien qu’elle soit une coïncidence, peut révéler l’existence d’une réception souterraine mais intense portée par au moins deux générations dans des cercles intellectuels et éditoriaux influents ainsi que dans le mouvement trotskiste.
Gramsci, Bourdieu et les Cultural studies : hypothèses autour d’une constellation
Authors: Keucheyan Razmig 
Published: September 2018

Cet article porte sur certains aspects de la réception de Gramsci en France. Cette réception s’effectue dans le champ politique aussi bien qu’académique, Gramsci étant non seulement un classique des sciences sociales, mais aussi une figure politique. Par ailleurs, elle prend place dans un contexte intellectuel où d’autres penseurs, tels que Pierre Bourdieu, développent sur certains thèmes des idées proches des siennes. L’argument central de l’article est que Gramsci, Bourdieu et les cultural studies forment une « constellation » d’auteurs et de concepts, qu’il est fécond dans le contexte français de penser conjointement. L’article se conclut sur quelques réflexions concernant le récent renouveau des études gramsciennes en France.
TIC et développement des territoires : enjeux des médiations numériques
Authors: Boulesnane Sabrina , Bouzidi Laïd , Varinard Christian 
Published: September 2018

Les phénomènes de mondialisation et de profusion des Technologies de l’Information et de la Communication ont bouleversé la notion de territoire. Nous proposons, à travers un regard empirique, de nous intéresser aux dynamiques de médiations numériques afin de parvenir à rapprocher les pratiques de l’Économie Sociale et Solidaire à celles de l’Économie Collaborative, engagées dans le développement territorial. Nous suggérons un modèle « hybride » qui a pour objectif de créer un cadre propice à l’intégration des enjeux sociaux au sein de l’espace public en général et des territoires en particulier, tout en exploitant le potentiel offert par l’écosystème numérique.
Réponses thérapeutiques des mères face à l’éruption dentaire chez les enfants du Ferlo au Sénégal
Authors: Diouf Massamba , Dieng Amadou , Boëtsch Gilles , Cisse Daouda 
Published: September 2018

Introduction : L’éruption dentaire est un processus qui commence chez les nourrissons et se poursuit au courant de l’enfance et de l’adolescence. Ce phénomène complexe provoque des troubles généraux nécessitant une prise en charge. L’objectif de ce travail était de comprendre les réponses thérapeutiques relatives à la dentition chez les enfants du Ferlo au Sénégal. Méthodes : L’étude était qualitative et portait sur les mères d’enfants en phase de dentition active, nourrissons et jeunes enfants. Les informations collectées par entretiens individuels et focus group concernaient les signes et symptômes de la dentition, la solution en première intention en cas de signe observé, le type et la forme des thérapeutiques utilisées, les méthodes de prévention empiriques et les aspects psychologiques de la mère pendant cette période. Résultats : Les thérapeutiques utilisées par les mères pour parer aux signes accompagnant la dentition étaient des incantations sur des fils avec des nœuds perlés, des amulettes, des plantes et divers objets de consistance dure, tels que des pièces de monnaie, des cauris, des coquillages ou encore des dents « d’âne sauvage ». Conclusion : Ces thérapeutiques répondaient aux préoccupations des mères aussi bien pour prévenir que pour traiter les signes accompagnant la dentition chez l’enfant. Cependant, des séances de communication de masse peuvent être nécessaires pour encourager la visite chez le dentiste et améliorer la prise en charge des complications.
Eerste-persoons autoriteit, zelfregulatie en het probleem van confabulatie
Authors: de Bruin Leon , Strijbos Derek 
Published: September 2018

Abstract

First-person authority, self-regulation and the problem of confabulation

In this paper we discuss the implications of confabulation studies for the everyday concept of first-person authority. We argue that the results of these studies are less problematic than they are often taken to be if we understand first-person authority in terms of a capacity for self-regulation. We discuss an example of clinical confabuluation to illustrate when confabulation does become a threat to first-person authority.
Fifty shades of white
Authors: Safuta Anna 
Published: September 2018

Abstract
This research article reflects on social inequalities in Europe in a transnational perspective, focusing on racial hierarchies between Westerners and ‘peripherally white’ migrants from Central and Eastern Europe (CEE). Peripheral whiteness is a concept introduced to account for the simultaneous privilege and subordination experienced by white migrants from non-Western countries. Peripheral whiteness is here examined on the example of migrant domestic workers from Ukraine employed in Poland and their Polish counterparts active in private households in Belgium. The contribution shows that, compared to their non-white counterparts, peripherally white domestic workers from CEE benefit from being racialised as white. This privilege is, however, inextricable from the subalternity of their status. The fact that the majority of domestic workers in Brussels are Polish and an increasing number of domestic workers in Warsaw come from Ukraine can be partially explained by the worker-employer hierarchy implicitly established by the  (semi-)peripheral status of their countries of origin.
Silicon cycle in the tropical South Pacific: contribution to the global Si cycle and evidence for an active pico-sized siliceous plankton
Authors: Leblanc Karine , Cornet Véronique , Rimmelin-Maury Peggy , Grosso Olivier , Hélias-Nunige Sandra , Brunet Camille , Claustre Hervé , Ras Joséphine , Leblond Nathalie , Quéguiner Bernard 
Published: September 2018

Abstract. This article presents data regarding the Si biogeochemical cycle during two
oceanographic cruises conducted in the tropical South Pacific (BIOSOPE and
OUTPACE cruises) in 2005 and 2015. It involves the first Si stock
measurements in this understudied region, encompassing various oceanic
systems from New Caledonia to the Chilean upwelling between 8 and 34∘ S.
Some of the lowest levels of biogenic silica standing stocks ever measured
were found in this area, notably in the southern Pacific gyre, where
Chlorophyll a concentrations are the most depleted worldwide. Integrated biogenic
silica stocks are as low as 1.08±0.95 mmol m−2 and are the lowest
stocks measured in the South Pacific. Size-fractionated biogenic silica
concentrations revealed a non-negligible contribution of the pico-sized
fraction (<2–3 µm) to biogenic silica standing stocks, representing 26%±12% of total biogenic silica during the OUTPACE cruise and 11%±9% during
the BIOSOPE cruise. These results indicate significant accumulation in this
size class, which was undocumented for 2005, but has since then been
related to Si uptake by Synechococcus cells. Si uptake measurements
carried out during BIOSOPE confirmed biological Si uptake by this
size fraction. We further present diatoms community structure associated with
the stock measurements for a global overview of the Si cycle in the tropical South Pacific.
Dense CTD survey versus glider fleet sampling: comparing data assimilation performance in a regional ocean model west of Sardinia
Authors: Hernandez-Lasheras Jaime , Mourre Baptiste 
Published: September 2018

Abstract. The REP14-MED sea trial carried out off the west coast of
Sardinia in June 2014 provided a rich set of observations from both
ship-based conductivity–temperature–depth (CTD) probes and a fleet of underwater gliders. We present the results of
several simulations assimilating data either from CTDs or from different
subsets of glider data, including up to eight vehicles, in addition to
satellite sea level anomalies, surface temperature and Argo profiles. The
Western Mediterranean OPerational forcasting system
(WMOP) regional ocean model is used with a local multi-model ensemble optimal
interpolation scheme to recursively ingest both lower-resolution large-scale
and dense local observations over the whole sea trial duration. Results show
the capacity of the system to ingest both types of data, leading to
improvements in the representation of all assimilated variables. These
improvements persist during the 3-day periods separating two analyses. At
the same time, the system presents some limitations in properly representing
the smaller-scale structures, which are smoothed out by the model error
covariances provided by the ensemble. An evaluation of the forecasts using
independent measurements from shipborne CTDs and a towed ScanFish deployed at
the end of the sea trial shows that the simulations assimilating initial CTD
data reduce the error by 39 % on average with respect to the simulation
without data assimilation. In the glider-data-assimilative experiments, the
forecast error is reduced as the number of vehicles increases. The simulation
assimilating CTDs outperforms the simulations assimilating data from one to
four gliders. A fleet of eight gliders provides similar performance to the
10 km spaced CTD initialization survey in these experiments, with an overall
40 % model error reduction capacity with respect to the simulation without
data assimilation when comparing against independent campaign observations.
Critical Thinking in the Foreign Language and Culture Curriculum
Authors: Snider Daren 
Published: September 2018

AbstractThe ability to think critically is considered an important component of a college education, and postsecondary institutions typically include critical thinking in student learning outcomes, particularly in the general education curriculum. Foreign language has traditionally been a staple discipline in general education. However, college foreign language instruction has not consistently integrated critical thinking in its approach to teaching and learning. Explicit teaching of critical-thinking skills in foreign language courses would strengthen higher-order thinking skills while enhancing language and cultural proficiency. This article (1) offers a definition of critical thinking that can be applied to foreign language and culture study, (2) outlines the role of critical thinking in postsecondary education, (3) discusses the various components that build communicative competence in a foreign language and culture, (4) describes the benefits of critical thinking to foreign language learners, and (5) suggests future research directions for integrating critical thinking into the foreign language curriculum.
Humanities Professors' Conceptions of Assessment: A Case Study
Authors: Rohrbacher Chad 
Published: September 2018

AbstractThis article's purpose is to make humanities professors' assumptions and beliefs about assessment more visible. It is important to understand how humanities professors view the assessment of general education, especially since those conceptions affect how they approach teaching and learning, and how they react to calls for assessment in their departments and/or institutions. Findings suggest that faculty embrace assessment to inform teaching and learning. Practical use of general education assessment data beyond reporting was absent, and the lack of shared governance in the process negatively affected faculty willingness to engage with general education assessment. Implications are discussed.
General Education: The Front Lines of Equity and Inclusion at a Midsize Public University
Authors: Klonoski Ed , Barker Gregory , Edghill-Walden Vernese 
Published: September 2018

Abstract
Unequal academic outcomes in postsecondary education persist for students from underserved populations (students of color, low socioeconomic status, first-generation), despite increased access to higher education in the last half century. General education classes present prime opportunities to address academic inequity. They typically have larger enrollments than major studies courses, are taken by more first-year students, and often serve as gateway courses for admission into numerous academic programs. Identifying pockets of underachievement—equity gaps—among discrete populations is a critical first step in ensuring that institutions support and meet the needs of all students. Equity-mindedness, which views student success as a shared responsibility between the student and the institution, is a second vital component for achieving academic equity. This article discusses two large initiatives undertaken at a midsized public university that are designed to achieve academic equity for all students: the identification and elimination of academic equity gaps among students from underserved populations, especially in general education courses, and the development of an equity-minded campus culture that embraces diversity and serves all students equally.