Pithiviers-le-Vieil – La Grande Raye

Date de l'opération : 1987 (SU) ; 1985 (SP) ; 1985 (SU) Inventeur(s) : Charbonnier M. ; Baratin Jean-François Sur la zone des fana (Fig. n°1 : localisation du sanctuaire de La Grande Raye et des thermes de l'Aumonet), les deux fana sud-est (L et M) furent décapés superficiellement (Gallia, 1985 : 354). Leur plan a été reconnu mais ils sont entièrement arasés. Deux petits autels bas ont été mis au jour, l’un est situé devant le fanum L et l’autre entre les deux fana. Une rue pavée reliant cett..

Béguin-Verbrugge Annette. Images en textes / images du texte : dispositifs graphiques et communication écrite

Si les effets de cadrage, de découpage et de montage dans les œuvres cinématographiques ou télévisuelles sont assez bien connus des spécialistes, quoique méconnus du grand public, les phénomènes analogues dans le domaine des écrits (qu’ils soient imprimés ou informatisés) n’ont guère été étudiés de manière systématique. Des travaux portant sur certains aspects spécifiques ont pu être publiés, soit dans le contexte d’approches socio-historiques de la communication imprimée, soit aussi, dans ce..

Annexe. Le rôle des associations professionnelles

Le comité d’organisation de ce colloque a décidé de faire une place spécifique, à travers une table ronde, aux associations professionnelles de l’information et de la documentation, car elles ont porté, souvent contre vents et marées, le projet d’une formation de leurs publics particuliers. Elles ont ainsi contribué à l’émergence d’une problématique d’identification des objets sur lesquels la formation, là où elles agissent, devait porter et, aussi, d’exploration des voies qui rendraient cell..

Correlations between stacked structures and weak itinerant magnetic properties of La2−x_{2-x} Yx_x Ni7_7 compounds

Hexagonal La$_2$Ni$_7$ and rhombohedral Y$_2$Ni$_7$ are weak itinerant antiferromagnet (wAFM) and ferromagnet (wFM), respectively. The crystal structure and magnetic properties of $A_2B_7$ intermetallic compounds ($A$ = La, Y, $B$ = Ni) have been investigated combining X-ray powder diffraction and magnetic measurements. The La$_{2-x}$Y$_x$Ni$_7$ intermetallic compounds with $0 \leq x \leq 1$ crystallize in the Ce$_{2}$Ni$_7$-type hexagonal structure with Y preferentially located in the [$AB_2$] units. The compounds with larger Y content ($1.2 \leq x < 2$) crystallize in both hexagonal and rhombohedral (Gd$_2$Co$_7$-type) structures with a progressive substitution of Y for La in the $A$ sites belonging to the [$AB_5$] units. Y$_2$Ni$_7$ crystallizes in the rhombohedral structure only. The average cell volume decreases linearly versus Y content, whereas the c/a ratio presents a minimum at $x = 1$ due to geometric constrains. The magnetic properties are strongly dependent on the structure type and the Y content. La$_{2}$Ni$_7$ displays a complex metamagnetic behavior with split AFM peaks. Compounds with x = 0.25 and 0.5 display a wAFM ground state and two metamagnetic transitions, the first one towards an intermediate wAFM state and the second one towards a FM state.T$_N$ and the second critical field increase with the Y content, indicating a stabilization of the AFM state. LaYNi$_7$, which is as the boundary between the two structure types, presents a very wFM state at low field and an AFM state as the applied field increases. All the compounds with $x > 1$ and containing a rhombohedral phase are wFM with $T_C$ = 53(2) K. In addition to the experimental studies, first principles calculations using spin polarization have been performed to interpret the evolution of both structural phase stability and magnetic ordering for $0 \leq x < 2$.Comment: 26 pages (7 for supplementary material), 4 tables, 9 main figures and 8 figures in supplementary materia

Relational Modeling for Robust and Efficient Pulmonary Lobe Segmentation in CT Scans

Pulmonary lobe segmentation in computed tomography scans is essential for regional assessment of pulmonary diseases. Recent works based on convolution neural networks have achieved good performance for this task. However, they are still limited in capturing structured relationships due to the nature of convolution. The shape of the pulmonary lobes affect each other and their borders relate to the appearance of other structures, such as vessels, airways, and the pleural wall. We argue that such structural relationships play a critical role in the accurate delineation of pulmonary lobes when the lungs are affected by diseases such as COVID-19 or COPD. In this paper, we propose a relational approach (RTSU-Net) that leverages structured relationships by introducing a novel non-local neural network module. The proposed module learns both visual and geometric relationships among all convolution features to produce self-attention weights. With a limited amount of training data available from COVID-19 subjects, we initially train and validate RTSU-Net on a cohort of 5000 subjects from the COPDGene study (4000 for training and 1000 for evaluation). Using models pre-trained on COPDGene, we apply transfer learning to retrain and evaluate RTSU-Net on 470 COVID-19 suspects (370 for retraining and 100 for evaluation). Experimental results show that RTSU-Net outperforms three baselines and performs robustly on cases with severe lung infection due to COVID-19

Les destins croisés ou les avatars du genre. Nicolas Sarkozy et Ségolène Royal vus par les photographes de Libération

L’iconographie de Libération lors de la dernière campagne présidentielle s’est cristallisée autour de figurations évolutives du candidat UMP et de la candidate PS, ces schématisations étant appréhendées ici comme des lieux d’inscription d’imaginaires du pouvoir où les places et rôles de genre sont déjà assignés. Leur affrontement a constitué un terrain de manœuvre où la question du genre s’est résolue en clôture par une stratégie de commutation paradoxale.The illustrations of the daily newspaper Libération during the last presidential election campaign focused on the evolutionary figurations of the UMP candidate as well as that of the Socialist Party. Such schematisations are tackled as a spot for the imagery of power where the role and place of gender are actually allocated beforehand. The confrontation served as battlefield in which the issue of gender has eventually been resolved through a strategy of paradoxical commutation.La iconografía de Libération durante la última campaña presidencial cristalizó sobre las figuraciones evolutivas de los candidatos UMP y del PS, estos esquematismos siendo captados como espacios de inscripción de imaginarios relativos al poder donde los lugares y funciones del género estan ya asignados. El efrentamiento entre ámbos candidatos constituyó un terreno de maniobra donde la questión del género fue resuelta y cerrada por una estrategia de conmutación paradojal

The Mass-Concentration Relation and the Stellar-to-Halo Mass Ratio in the CFHT Stripe 82 Survey

We present a new measurement of the mass-concentration relation and the stellar-to-halo mass ratio over the halo mass range $5\times 10^{12}$ to $2\times 10^{14}M_{\odot}$. To achieve this, we use weak lensing measurements from the CFHT Stripe 82 Survey (CS82), combined with the central galaxies from the redMaPPer cluster catalogue and the LOWZ/CMASS galaxy sample of the Sloan Digital Sky Survey-III Baryon Oscillation Spectroscopic Survey Tenth Data Release. The stacked lensing signals around these samples are modelled as a sum of contributions from the central galaxy, its dark matter halo, and the neighboring halos, as well as a term for possible centering errors. We measure the mass-concentration relation: $c_{200c}(M)=A(\frac{M_{200c}}{M_0})^{B}$ with $A=5.24\pm1.24, B=-0.13\pm0.10$ for $0.2<z<0.4$ and $A=6.61\pm0.75, B=-0.15\pm0.05$ for $0.4<z<0.6$. These amplitudes and slopes are completely consistent with predictions from recent simulations. We also measure the stellar-to-halo mass ratio for our samples, and find results consistent with previous measurements from lensing and other techniques.Comment: 10 pages, 3 figures, 3 table