Espaces et lieux de la musique

Michael Werner, directeur d’étudesKarine Le Bail, chargée de recherche au CNRSPatrice Veit, directeur de recherche au CNRS Espaces et lieux de musique : le musicien, l’architecte, le spectateur et le politique Ce séminaire bimensuel, à raison de séances de trois heures, a engagé depuis trois ans une réflexion sur la figuration de l’espace dans le champ scénique et musical. Durant l’année écoulée, Marie-Madeleine Mervant-Roux, directrice de recherche au CNRS (Arias, atelier de recherche sur l’..

Lieux et espaces de la musique

Michael Werner, directeur d’étudesKarine Le Bail, chargée de recherche au CNRSPatrice Veit, directeur de recherche au CNRS Espaces et lieux de musique : le musicien, l’architecte, le spectateur et le politique Dans le cadre de ce séminaire mensuel, à raison de séances de quatre heures, nous avons poursuivi l’exploration des différents aspects liés à l’espace qui structurent l’exécution et l’écoute de la musique. Pendant l’année 2009-2010, le séminaire était plus particulièrement centré sur la..

Connection between charge-density-wave order and charge transport in the cuprate superconductors

Charge-density-wave (CDW) correlations within the quintessential CuO$_2$ planes have been argued to either cause [1] or compete with [2] the superconductivity in the cuprates, and they might furthermore drive the Fermi-surface reconstruction in high magnetic fields implied by quantum oscillation (QO) experiments for YBa$_2$Cu$_3$O$_{6+{\delta}}$ (YBCO) [3] and HgBa$_2$CuO$_{4+{\delta}}$ (Hg1201) [4]. Consequently, the observation of bulk CDW order in YBCO was a significant development [5,6,7]. Hg1201 features particularly high structural symmetry and recently has been demonstrated to exhibit Fermi-liquid charge transport in the relevant temperature-doping range of the phase diagram, whereas for YBCO and other cuprates this underlying property of the CuO$_2$ planes is partially or fully masked [8-10]. It therefore is imperative to establish if the pristine transport behavior of Hg1201 is compatible with CDW order. Here we investigate Hg1201 ($T_c$ = 72 K) via bulk Cu L-edge resonant X-ray scattering. We indeed observe CDW correlations in the absence of a magnetic field, although the correlations and competition with superconductivity are weaker than in YBCO. Interestingly, at the measured hole-doping level, both the short-range CDW and Fermi-liquid transport appear below the same temperature of about 200 K. Our result points to a unifying picture in which the CDW formation is preceded at the higher pseudogap temperature by $q$ = 0 magnetic order [11,12] and the build-up of significant dynamic antiferromagnetic correlations [13]. Furthermore, the smaller CDW modulation wave vector observed for Hg1201 is consistent with the larger electron pocket implied by both QO [4] and Hall-effect [14] measurements, which suggests that CDW correlations are indeed responsible for the low-temperature QO phenomenon

Analyzing the Real-World Applicability of DGA Classifiers

Separating benign domains from domains generated by DGAs with the help of a binary classifier is a well-studied problem for which promising performance results have been published. The corresponding multiclass task of determining the exact DGA that generated a domain enabling targeted remediation measures is less well studied. Selecting the most promising classifier for these tasks in practice raises a number of questions that have not been addressed in prior work so far. These include the questions on which traffic to train in which network and when, just as well as how to assess robustness against adversarial attacks. Moreover, it is unclear which features lead a classifier to a decision and whether the classifiers are real-time capable. In this paper, we address these issues and thus contribute to bringing DGA detection classifiers closer to practical use. In this context, we propose one novel classifier based on residual neural networks for each of the two tasks and extensively evaluate them as well as previously proposed classifiers in a unified setting. We not only evaluate their classification performance but also compare them with respect to explainability, robustness, and training and classification speed. Finally, we show that our newly proposed binary classifier generalizes well to other networks, is time-robust, and able to identify previously unknown DGAs.Comment: Accepted at The 15th International Conference on Availability, Reliability and Security (ARES 2020

Transcriptome Sequencing of Hevea brasiliensis for Development of Microsatellite Markers and Construction of a Genetic Linkage Map

To obtain more information on the Hevea brasiliensis genome, we sequenced the transcriptome from the vegetative shoot apex yielding 2 311 497 reads. Clustering and assembly of the reads produced a total of 113 313 unique sequences, comprising 28 387 isotigs and 84 926 singletons. Also, 17 819 expressed sequence tag (EST)-simple sequence repeats (SSRs) were identified from the data set. To demonstrate the use of this EST resource for marker development, primers were designed for 430 of the EST-SSRs. Three hundred and twenty-three primer pairs were amplifiable in H. brasiliensis clones. Polymorphic information content values of selected 47 SSRs among 20 H. brasiliensis clones ranged from 0.13 to 0.71, with an average of 0.51. A dendrogram of genetic similarities between the 20 H. brasiliensis clones using these 47 EST-SSRs suggested two distinct groups that correlated well with clone pedigree. These novel EST-SSRs together with the published SSRs were used for the construction of an integrated parental linkage map of H. brasiliensis based on 81 lines of an F1 mapping population. The map consisted of 97 loci, consisting of 37 novel EST-SSRs and 60 published SSRs, distributed on 23 linkage groups and covered 842.9 cM with a mean interval of 11.9 cM and ∼4 loci per linkage group. Although the numbers of linkage groups exceed the haploid number (18), but with several common markers between homologous linkage groups with the previous map indicated that the F1 map in this study is appropriate for further study in marker-assisted selection

CRIA – Centre de recherches interdisciplinaires sur l’Allemagne

Christophe Duhamelle, Michael Werner, Pierre Monnet, directeurs d’étudesFalk Bretschneider, maître de conférencesBernd Klesmann, chercheur de l’Institut historique allemand, ParisChristine Lebeau, professeure à l’Université Paris-I/Panthéon-SorbonnePatrice Veit, directeur de recherche au CNRS Les mots de l’histoire : historiens allemands et français face à leurs concepts et à leurs outils Ce séminaire, organisé en partenariat avec l’Institut historique allemand de Paris et soutenu depuis 2008..

CRIA – Centre de recherches interdisciplinaires sur l’Allemagne

Christophe Duhamelle, Michael Werner, Pierre Monnet, directeurs d’étudesFalk Bretschneider, maître de conférencesBernd Klesmann, chercheur de l’Institut historique allemand, ParisChristine Lebeau, professeure à l’Université Paris-I/Panthéon-SorbonnePatrice Veit, directeur de recherche au CNRS Les mots de l’histoire : historiens allemands et français face à leurs concepts et à leurs outils Ce séminaire, organisé en partenariat avec l’Institut historique allemand de Paris et soutenu depuis 2008..

Invasive species control: incorporating demographic data and seed dispersal into a management model for Rhododendron ponticum

Rhododendron ponticum is a serious invasive alien plant in the British Isles and is of significant conservation and economic concern. Here, we integrate information on both the life-history and spatial dynamics of this species within an individual-based, spatially-explicit model and investigate the effectiveness of different control strategies. Importantly, we simulate seed movement and dispersal using a mechanistic seed dispersal model. We investigate the effectiveness of initiating control at the edge versus the core of the infestation, with and without returning each year to remove seedlings. We compare these results to an age-dependent strategy whereby the oldest plants are removed each year. Age-dependent control, in which the oldest plants were removed first, was the most effective strategy investigated, both in terms of the probability of successful eradication and the number of years taken to control. We demonstrate that this is because the older (and taller) plants towards the core produce more seeds that, on average, travel further. Indeed, our results suggest that the expansion of the invading front is actually driven as much by seeds that disperse long distances from these larger plants as by the seed rain from recently matured plants located much closer to the front. Finally, we investigate the potential use of ‘quarantine lines’ - corridors of unsuitable habitat that are sufficiently wide to contain an infestation, preventing spread to vulnerable areas. This study has provided generic insights into best practice for management based on the current understanding of the biology and ecology of this pernicious, invasive plant

Centre de recherches interdisciplinaires sur l’Allemagne – CRIA

Jean-Louis Georget, maître de conférences à l’Université Paris-XIII/Nord L’ethnologie allemande de la Seconde Guerre mondiale à l’École de Tübingen Le travail a porté cette année sur l’étrange oubli de contextualisation de l’émergence de la discipline des sciences de la culture qu’est la Volkskunde, produit d’un long refoulement depuis la fin du XIXe siècle. Bernhard Tschofen, directeur de l’institut Ludwig Uhland de Tübingen, est venu parler, dans le cadre d’une invitation faite par le Centr..