39 research outputs found
De la transmission d'une clause attributive de juridiction dans une chaîne de contrats
No full textInternational audienceCour de justice de l'Union européenne. - 7 février 2013. - aff. C-543/10, D. 2013. 1110, note S. Bollée ; ibid. 1503, obs. F. Jault-Seseke ; RTD. civ. 2013. 338, obs. P. Remy-Corlay ; RTD. com. 2013. 381, obs. A. Marmisse-d'Abbadie d'Arras
Clause attributive de juridiction et chaîne de contrats dans l'Union européenne : l'étrange figure de la clause attributive de juridiction conclue à titre principal
No full textInternational audience(CJUE 7 févr. 2013, aff. C-543/10, Refcomp SpA, D. 2013. 1110, note S. Bollée ; ibid. 1503, obs. F. Jault-Seseke ; ibid. 2293, obs. L. d'Avout et S. Bollée ; Rev. crit. DIP 2013. 710, note D. Bureau ; RTD civ. 2013. 338, obs. P. Remy-Corlay ; RTD com. 2013. 381, obs. A. Marmisse-d'Abbadie d'Arrast - Civ. 1re, 11 sept. 2013, n° 09-12.442, à paraître au Bulletin, D. 2014. 121, note D. Mazeaud ; RTD civ. 2013. 839, obs. H. Barbier ; R. Libchaber, JCP 2013. doctr. 1225
A generic postprocessing technique for image compression
No full textA postprocessing approach is developed for image coding applications. In this approach, a distortion-recovery model extracts multi-resolution edge features from the decompressed image and uses these visual features as input to estimate the difference image between the original uncompressed image and the decompressed image. Coding distortions are directly compensated by adding the model output to the decompressed image. Unlike the majority of existing postprocessing methods, which adopt filtering techniques to smooth blocking artifacts and are designed specifically for transform coding or vector quantization, the proposed approach is a generic postprocessing technique and can be applied to all of the main coding methods. Experiments involving postprocessing four coding systems were conducted, and the results obtained show that the proposed technique achieves significant improvements on the quality of reconstructed images, both in terms of the objective distortion measure and subjective visual assessment
Seasonal development and natural enemies of an invasive exotic species, the swede midge Contarinia nasturtii (Kieffer), in Quebec
No full textIn Quebec, the swede midge (Contarinia nasturtii), a newly invasive pest, was found for the first time in 2003. During a two year study (2004-2005) I studied the seasonal development of the swede midge, the presence of natural enemies and tested entomopathogenic nematodes for its control. Results showed that the overwintering generation of the swede midge emerged during the second half of June. Based on adult captures and abundance of larvae in the field, there were three to four overlapping generations. Late transplants were more heavily attacked by the swede midge and broccoli and cauliflower were the most susceptible crops. No parasitoids were found in the experimental sites during either year of the study and two polyphagous coccinellid predators (Harmonia axyridis and Coccinella septempunctata) were field-collected for further evaluation under laboratory conditions. Although these two coccinellid species fed on swede midge larvae in plastic containers, further experiments demonstrated that H. axyridis was not able to prey on swede midge larvae on infested broccoli plants. The susceptibility of swede midge larvae to three species of entomopathogenic nematodes (Steinernema feltiae, S. carpocapsae, and Heterorhabditis bacteriophora) was also evaluated in laboratory assays. Heterorhabditis bacteriophora was the only species that caused significant mortality to swede midge larvae and, at a concentration of 1000 IJs/larva, caused 90-100% mortality in loam, sandy loam, clay and muck soil. This is the first study describing the seasonal development of the swede midge in Quebec. In addition, the potential use of entomopathogenic nematodes as biological control agents against the swede midge is demonstrated
La spécificité du droit de l'Union européenne réaffirmée
No full textInternational audience(T. confl., 17 octobre 2011, n° 3828 et 3829, SCEA du Chéneau c/ INAPORC c/ Cherel c/ CNIEL, Lebon ; AJDA 2012. 27, chron. M. Guyomar et X. Domino ; ibid. 2011. 2041 ; D. 2011. 3046, et les obs., note F. Donnat ; ibid. 2012. 244, obs. N. Fricero ; RFDA 2011. 1122, concl. J.-D. Sarcelet ; ibid. 1129, note B. Seiller ; ibid. 1136, note A. Roblot-Troizier ; ibid. 2012. 339, étude J.-L. Mestre ; RTD civ. 2011. 735, obs. P. Remy-Corlay ; RTD eur. 2012. 135, étude D. Ritleng ; T. confl., 12 décembre 2011, n° 3841, Green Yellow (Sté) c/ Electricité de France, Lebon ; AJDA 2012. 27, chron. M. Guyomar et X. Domino ; ibid. 2011. 2503 ; CE, 23 mars 2012, n° 331805, Fédération Sud Santé Sociaux, Lebon ; AJDA 2012. 620 ; D. 2012. 1012, obs. S. Brondel
La spécificité du droit de l'Union européenne réaffirmée
No full textInternational audience(T. confl., 17 octobre 2011, n° 3828 et 3829, SCEA du Chéneau c/ INAPORC c/ Cherel c/ CNIEL, Lebon ; AJDA 2012. 27, chron. M. Guyomar et X. Domino ; ibid. 2011. 2041 ; D. 2011. 3046, et les obs., note F. Donnat ; ibid. 2012. 244, obs. N. Fricero ; RFDA 2011. 1122, concl. J.-D. Sarcelet ; ibid. 1129, note B. Seiller ; ibid. 1136, note A. Roblot-Troizier ; ibid. 2012. 339, étude J.-L. Mestre ; RTD civ. 2011. 735, obs. P. Remy-Corlay ; RTD eur. 2012. 135, étude D. Ritleng ; T. confl., 12 décembre 2011, n° 3841, Green Yellow (Sté) c/ Electricité de France, Lebon ; AJDA 2012. 27, chron. M. Guyomar et X. Domino ; ibid. 2011. 2503 ; CE, 23 mars 2012, n° 331805, Fédération Sud Santé Sociaux, Lebon ; AJDA 2012. 620 ; D. 2012. 1012, obs. S. Brondel
Model-Based Learning for Location-to-Channel Mapping
No full textInternational audienceModern communication systems rely on accurate channel estimation to achieve efficient and reliable transmission of information. As the communication channel response is highly related to the user's location, one can use a neural network to map the user's spatial coordinates to the channel coefficients. However, these latter are rapidly varying as a function of the location, on the order of the wavelength. Classical neural architectures being biased towards learning low frequency functions (spectral bias), such mapping is therefore notably difficult to learn. In order to overcome this limitation, this paper presents a frugal, model-based network that separates the low frequency from the high frequency components of the target mapping function. This yields an hypernetwork architecture where the neural network only learns low frequency sparse coefficients in a dictionary of high frequency components. Simulation results show that the proposed neural network outperforms standard approaches on realistic synthetic data
Chemically engineered extracts of St John’s wort as sources of polyprenylated acylphloroglucinols to prevent endothelial dysfunction
No full textInternational audienceGraft rejection remains a serious concern in transplantation therapy. As endothelial dysfunction plays a prominent role in transplant rejection, finding new ways to prevent this process is a huge challenge. Recently, Rouger et al. evidenced the significant anti-inflammatory and immunomodulatory properties of polyphenolic compounds [e.g. polyprenylated acylphloroglucinols (PPAPs)] from tropical Calophyllaceae and Clusiaceae plants on endothelial cells [1,2]. Plants from the Hypericaceae family biosynthesize similar natural products and some species such as St John's wort (Hypericum perforatum) are cultivated thus available in large amounts. To preserve biodiversity and valorize medicinal plants growing in the Loire Valley, the HYPROTEC project attempts to I/improve access to a library of original and bioactive polyphenols by chemical modifications of H. perforatum extracts [3]; II/evaluate their potential for preventing endothelial dysfunction. Preliminary results evaluating the inhibition of VCAM-1 expression on endothelial cells [1] by H. perforatum roots and flowering tops extracts and their fractions, combined with a dereplication study, suggested that hyperforin 1 and its oxidized forms could prevent inflammation and, consequently, endothelial dysfunction. The present work thus describes the synthesis and purification of a small library of PPAPs derivatives from the cyclohexanic flowering tops extract of H. perforatum (1: 3.0% m/m) that was subjected to various oxidation reactions using so-called “green processes”. Data were eventually supplemented by results from biological evaluation. In particular, hyperforin-DCHA 1 (10µM) strongly inhibited TNF-induced VCAM-1 (58%), ICAM-1 (34%) and E-selectin (54%) expression in comparison with the reference compound PDTC (200µM)
Jupyter Notebooks—a publishing format for reproducible computational workflows
No full textIt is increasingly necessary for researchers in all fields to write computer code, and in order to reproduce research results, it is important that this code is published. We present Jupyter notebooks, a document format for publishing code, results and explanations in a form that is both readable and executable. We discuss various tools and use cases for notebook documents
