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International audience; Deterministic networking allows carrying data flows with low data-loss rates and with bounded latency. A typical use-case is the convergence of Operational Technology (OT) with Information Technology (IT), also known as the Industrial Internet. Wireless networks operate on a shared communication medium where the potential external interference along with multi-path fading impact data packet delivery. Since the medium is shared, it is not necessarily possible to employ wired techniques, such as preemption, to guarantee timely delivery. By employing diversity in the time, frequency and spatial domains, wireless technologies with scheduled transmissions, such as IEEE 802.15.4 Time Slot Channel Hopping (TSCH), can mitigate those effects and provide Reliable and Available Wireless communications that approach determinism. Nevertheless, a radio link operating in the ISM band, such as IEEE 802.15.4-TSCH, still needs to handle collisions and possibly re-transmission. Therefore, a single link cannot reliably ensure delivery at all times within bounded latency. It takes redundant links and paths to provide both the high availability and the near consistent reliability that industrial applications require. In this paper, we present the Packet Automatic Repeat reQuest (ARQ), Replication and Elimination (RE), and Overhearing (PAREO) functions to further increase the Quality of Service (QoS) in industrial networks, even when implemented on top of best-effort traffic in a shared network.

Abstract Fluorescein (F) species were encapsulated inside nanosized zeolites L and Y by their synthesis from adsorbed precursors (phthalic anhydride (Ph) and resorcinol (R)). The applied nanozeolites were modified either with H+ or Zn2+ cations and they played roles of the catalysts for synthesis of F and of the matrices for resulting dye molecules. The F loading, its tautomeric forms and optical properties of obtained composites depended on zeolite structure, morphology and on introduced cations. The composites usually showed higher fluorescence intensity than the pristine dye. The highest fluorescence intensity was noticed for the sample with nano-ZnL matrix. This intensity was much higher than that observed for composite with conventional micro-sized Zn L zeolite. Regarding an efficient fluorescence and nanosize of the obtained composites they seem promising fluorescent tracer for medical (theranostic) applications.

International audience; Attenuated total reflectance Fourier transform spectroscopy (ATR-FTIR) was applied on fresh (NF), freeze-dried (FD) and cell wall materials (AIS) of raw and processed apples. These samples prepared from 36 apple sets and the corresponding 72 purees, issued from different varieties, agricultural practices, storage periods and processing conditions, were used to build models including exploratory analysis, supervised classification and multivariate calibration. Fresh and freeze-dried samples presented similar fingerprint spectral variations due to processing. ATR-FTIR directly on fresh purees satisfactorily predicted textural properties such as particle average size and volume (RPD > 3.0), while freeze-drying improved assessment of chemical (RPD > 3.2) and rheological (RPD > 3.1) parameters using partial least-squares regression. The assessment of texture and macrocomponents of purees can be obtained with a limited sample preparation. For research applications because of a need of sample preparation, changes of cell wall composition during fruit processing could be assessed in relationship with pectin degradation.

International audience; Magnitudes of differential stress in the lithosphere, especially in the crust, are still disputed. Earthquake-based stress drop estimates indicate median values ca. 180 MPa, corresponding to a friction angle of ca. 10° to maintain the topographic relief between lowland and plateau for >10 Ma. The relative contribution of crustal strength to total lithospheric strength varies considerably laterally. In the region between lowland and plateau and inside the plateau the depth-integrated crustal strength is approximately equal to the depth-integrated strength of the mantle lithosphere. Simple analytical formulae predicting the lateral variation of depth-integrated stresses agree with numerically calculated stress fields, which show both the accuracy of the numerical results and the applicability of simple, rheology-independent, analytical predictions to highly variable, rheology-dependent stress fields. Our results indicate that (1) crustal strength can be locally equal to mantle lithosphere strength and that (2) crustal stresses must be at least one order of magnitude larger than median stress drops in order to support the plateau relief over a duration of ca. 10 Ma.

Dans No Thoroughfare de Charles Dickens et Wilkie Collins (f870), le déséquilibre de l’intrigue survient lorsque le « personnage principal » apprend qu’il est, et qu’à la fois, il n’est pas Walter Wilding. Les deux auteurs nous amènent à la limite de l’appellation, un procédé dont ils rappellent la complexité et dont ils proposent diverses déviances. Ils mettent en présence deux personnages, qui pour survivre dans le récit devront se poser la question des rapports complexes entre nom propre et référence. A travers deux modes de construction de personnages, Wilkie Collins et Charles Dickens illustrent le débat des logico-linguistes et y apportent leur participation. In No Thoroughfare by Charles Dickens and Wilkie Collins (1870), the main plot is starts on the “main character’s” learning that he both is and is not Walter Wilding. The two authors thus take us to the limits of naming, reminding us of the complexity of its process while they display various deviances of the naming process. Two characters are involved and their endurance in the narrative they consider the complex relations between proper noun and referent. Through two modes of character framing, Wilkie Collins and Charles Dickens illustrate and take part in the logico-linguists’ long existing debate on this issue.

International audience

International audience

In the Maya area, funerary practices are tightly linked to residential spaces. The proximity between the living and the dead is, therefore, at its apex. This situation raises a number of questions regarding the relationship between these defunct and their living heirs, inter-rogations reinforced by the high selectivity that seems to affect the sample. The residential Groups appear to be restricted areas for the dead, places that only a selected few can access according to different parameters. Amongst these, status is certainly the most prominent. It is further complexified by the existence of regional variations.This study opens with a general approach that deals with the practice of burying the dead within the house, complete with an extensive methodological discussion. A presentation of the excavation results from Naachtun’s Unit 5N6 (Guatemala) follows to illustrate the foregoing. Finally, data from several sites are statistically compared to show similarities and differencies, then discussed in light of several ethnographical studies.; Les pratiques funéraires sont, dans l’aire maya, étroitement associées aux ensembles résidentiels. La proximité entre les vivants et les morts y est donc maximale, l’espace quotidien étant tout à la fois un lieu d’habitat et un espace funéraire. Cela soulève un certain nombre de questions quant à la relation entre ces individus défunts et leurs descendants, interrogations encore renforcées par l’important degré de sélection qui semble s’exercer à l’endroit des morts. Les Groupes résidentiels sont, pour ces derniers, des lieux dont l’accès est restreint par un certain nombre de paramètres dont le plus important est sans nul doute le statut - situation complexité par l’existence de nombreuses nuances régionales.La présente étude comprend en premier lieu une discussion générale autour de la question des morts dans l’habitat, augmentée d’une discussion méthodologique approfondie concernant la fouille. Elle se poursuit avec la présentation des résultats de la fouille intensive de l’unité 5N6 de Naachtun (Guatemala), qui illustre concrètement le propos développé précédemment. Enfin, les données de différents sites sont confrontées pour mettre en évidence schémas récurrents et différences, puis discutées à la lumière de quelques exemples ethnographiques.

Abstract In recent years, Topology Optimization (TO) gained interest in the scientific community. It assists in finding the best arrangement of material in a design volume. The classical approach named ”Solid Isotropic Material with Penalization” (SIMP) associates a fictitious density to each finite element in the domain. While SIMP is described as an implicit approach which can lead to problems with dimensionality of variables, explicit methods adopt a geometric projection of simple elements (eg.: bars) to reduce the number of design variables. This simplifies the geometric interpretation of the optimal architecture. The major explicit methods were recently unified into a general framework, Generalized Geometric Projection (GGP). Currently it is quite challenging to take into account manufacturing constraints in the topology optimization design phase. Therefore this paper presents an application of the GGP Method to the design of products made by Additive Layer Manufacturing (ALM). Every printed layer constitutes a geometric element, involving design variables relative to position and width. Specific constraints of ALM, including bridge length and overhang angle, can be easily monitored by exploiting the geometric features of the combined elements. Examples in two dimensions will be reported, analyzing two academic benchmark problems. A comparison to other proven techniques is also detailed. An mean difference of 7.7% is observed for solutions with only overhang angle constraint, while a mean difference of 11% is observed for solutions with overhang angle and bridge length constraint. The presented work integrates design and manufacturing, directly identifying the path of the printed layers.

A mild and user-friendly nickel-catalyzed method for the reductive homocoupling of aromatic tosylates is presented. The reaction proceeds between room temperature and 60 °C, with stable substrates (ArOTs) easily prepared from inexpensive and commercially available phenols or naphthols. It relies on a catalytic amount (10 mol%) of a robust catalyst (NiBr2bipy) that does not require the preparation of sensitive organometallic intermediates. Yields are good to excellent.