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Search Results: 1 - 10 of 2944 matches for " Mathieu Yvette Yannick "
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Les adjectifs dérivés en -eux liés aux éléments du corps. Comment traiter des microvariations interprétatives ?
Fradin Bernard,Mathieu Yvette Yannick
SHS Web of Conferences , 2012, DOI: 10.1051/shsconf/20120100163
Abstract: La majorité des adjectifs en EUX du fran ais est dérivée à partir d’un nom comme orag-eux ← orage. Ceux qui ne le sont pas proviennent du latin par emprunt e.g. ligneux < lat lignosus, plus rarement du grec e.g. scléreux. Cette contribution examine un sous ensemble de ces adjectifs dont le nom base dénote un élément du corps (cartilagineux, osseux, tendineux, etc.), ou lié au corps (bronchiteux, cancéreux, migraineux, etc.), avec pour objectif de déterminer la relation sémantique qui s’instaure entre le nom base et le nom recteur. Après avoir établi une classification des adjectifs en fonction de leur nom base (donnée en annexe), nous montrons comment les propriétés sémantiques des noms bases et des noms recteurs déterminent les possibilités interprétatives. Cette analyse est resituée à l’intérieur du traitement plus large des adjectifs en -EUX et montre que les principes interprétatifs généraux à l’ uvre dans la construction de ces adjectifs opèrent dans le domaine de ceux liés au corps. Cette analyse montre surtout que les propriétés sémantiques des noms bases et des noms recteurs déterminent fortement les possibilités interprétatives, et que l’interprétation la moins dépendante de ces propriétés, l’interprétation spatiale, constitue logiquement la plus répandue. Cette étude éclaire, en retour, le classement sémantique des noms.
Microstructural, Chemical and Mineralogical Analyses for Understanding the Geotechnical Properties of Clayey Soils  [PDF]
Yvette Tankpinou Kiki, Nadia Saiyouri, Victor Gbaguidi, Yannick Anguy, Cécile Gaborieau, Richard Fabre
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2016, DOI: 10.4236/jmmce.2016.46027
Abstract: This paper presents a study research in the laboratory of three clayey soils from the depression of the Lama, a tropical climate area where disorders appear on construction and roads. Samples were tested to establish the relationship between their mineralogy and their geotechnical properties. On the three clayey soils, analyses were performed to characterize the macroscopic behavior (physical tests, free swelling test and compressibility tests) and the microstructural, chemical and mineralogical characterizations by thermal analysis, chemical analysis, X-Ray diffraction, Scanning Electron Microscopy observations complementary X-ray EDS analyses. At first glance, the results of physical and compressibility tests appear not to be consistent with the free swelling test results. Indeed, these results highlighted differences in the behaviors of the samples because the swelling potential revealed by the results of physical and compressibility test does not follow the same trend as the one given by the free swelling test result. The main clay minerals in the studied clayey soils varied from fibrous clays (palygorskite) to best-known clays such as smectite and kaolinite. Microstructural, chemical and mineralogical analyses allowed to understand and explain the different trends obtained by the different types of geotechnical characterization tests of studied clayey soils.
A new method for estimation and model selection: $ρ$-estimation
Yannick Baraud,Lucien Birgé,Mathieu Sart
Statistics , 2014,
Abstract: The aim of this paper is to present a new estimation procedure that can be applied in many statistical frameworks including density and regression and which leads to both robust and optimal (or nearly optimal) estimators. In density estimation, they asymptotically coincide with the celebrated maximum likelihood estimators at least when the statistical model is regular enough and contains the true density to estimate. For very general models of densities, including non-compact ones, these estimators are robust with respect to the Hellinger distance and converge at optimal rate (up to a possible logarithmic factor) in all cases we know. In the regression setting, our approach improves upon the classical least squares from many aspects. In simple linear regression for example, it provides an estimation of the coefficients that are both robust to outliers and simultaneously rate-optimal (or nearly rate-optimal) for large class of error distributions including Gaussian, Laplace, Cauchy and uniform among others.
Satisfiability of General Intruder Constraints with and without a Set Constructor
Tigran Avanesov,Yannick Chevalier,Micha?l Rusinowitch,Mathieu Turuani
Computer Science , 2011,
Abstract: Many decision problems on security protocols can be reduced to solving so-called intruder constraints in Dolev Yao model. Most constraint solving procedures for protocol security rely on two properties of constraint systems called monotonicity and variable origination. In this work we relax these restrictions by giving a decision procedure for solving general intruder constraints (that do not have these properties) that stays in NP. Our result extends a first work by L. Mazar\'e in several directions: we allow non-atomic keys, and an associative, commutative and idempotent symbol (for modeling sets). We also discuss several new applications of the results.
Intruder deducibility constraints with negation. Decidability and application to secured service compositions
Tigran Avanesov,Yannick Chevalier,Micha?l Rusinowitch,Mathieu Turuani
Computer Science , 2012,
Abstract: The problem of finding a mediator to compose secured services has been reduced in our former work to the problem of solving deducibility constraints similar to those employed for cryptographic protocol analysis. We extend in this paper the mediator synthesis procedure by a construction for expressing that some data is not accessible to the mediator. Then we give a decision procedure for verifying that a mediator satisfying this non-disclosure policy can be effectively synthesized. This procedure has been implemented in CL-AtSe, our protocol analysis tool. The procedure extends constraint solving for cryptographic protocol analysis in a significative way as it is able to handle negative deducibility constraints without restriction. In particular it applies to all subterm convergent theories and therefore covers several interesting theories in formal security analysis including encryption, hashing, signature and pairing.
Brucella melitensis in France: Persistence in Wildlife and Probable Spillover from Alpine Ibex to Domestic Animals
Virginie Mick, Gilles Le Carrou, Yannick Corde, Yvette Game, Maryne Jay, Bruno Garin-Bastuji
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0094168
Abstract: Bovine brucellosis is a major zoonosis, mainly caused by Brucella abortus, more rarely by Brucella melitensis. France has been bovine brucellosis officially-free since 2005 with no cases reported in domestic/wild ruminants since 2003. In 2012, bovine and autochthonous human cases due to B. melitensis biovar 3 (Bmel3) occurred in the French Alps. Epidemiological investigations implemented in wild and domestic ruminants evidenced a high seroprevalence (>45%) in Alpine ibex (Capra ibex); no cases were disclosed in other domestic or wild ruminants, except for one isolated case in a chamois (Rupicapra rupicapra). These results raised the question of a possible persistence/emergence of Brucella in wildlife. The purpose of this study was to assess genetic relationships among the Bmel3 strains historically isolated in humans, domestic and wild ruminants in Southeastern France, over two decades, by the MLVA-panel2B assay, and to propose a possible explanation for the origin of the recent bovine and human infections. Indeed, this genotyping strategy proved to be efficient for this microepidemiological investigation using an interpretation cut-off established for a fine-scale setting. The isolates, from the 2012 domestic/human outbreak harbored an identical genotype, confirming a recent and direct contamination from cattle to human. Interestingly, they clustered not only with isolates from wildlife in 2012, but also with local historical domestic isolates, in particular with the 1999 last bovine case in the same massif. Altogether, our results suggest that the recent bovine outbreak could have originated from the Alpine ibex population. This is the first report of a B. melitensis spillover from wildlife to domestic ruminants and the sustainability of the infection in Alpine ibex. However, this wild population, reintroduced in the 1970s in an almost closed massif, might be considered as a semi-domestic free-ranging herd. Anthropogenic factors could therefore account with the high observed intra-species prevalence.
High-throughput and long-term observation of compartmentalized biochemical oscillators
Koshi Hasatani,Mathieu Leocmach,Anthony J. Genot,André Estévez-Torres,Teruo Fujii,Yannick Rondelez
Quantitative Biology , 2015, DOI: 10.1039/c3cc44323j
Abstract: We report the splitting of an oscillating DNA circuit into $\sim 700$ droplets with picoliter volumes. Upon incubation at constant temperature, the droplets display sustained oscillations that can be observed for more than a day. Superimposed to the bulk behaviour, we find two intriguing new phenomena - slow desynchronization between the compartments and kinematic spatial waves - and investigate their possible origin. This approach provides a route to study the influence of small volume effects in biology, and paves the way to technological applications of compartmentalized molecular programs controlling complex dynamics.
100ps time resolution with thin silicon pixel detectors and a SiGe HBT amplifier
Mathieu Benoit,Roberto Cardarelli,Stéphane Débieux,Yannick Favre,Giuseppe Iacobucci,Marzio Nessi,Lorenzo Paolozzi,Kenji Shu
Physics , 2015,
Abstract: A 100um thick silicon detector with 1mm2 pad readout optimized for sub-nanosecond time resolution has been developed and tested. Coupled to a purposely developed amplifier based on SiGe HBT technology, this detector was characterized at the H8 beam line at the CERN SPS. An excellent time resolution of (106+-1)ps for silicon detectors was measured with minimum ionizing particles.
Efeito inibidor de cárie dental de uma única aplica??o tópica de solu??o de fluofosfato acidulada em adultos jovens: experiência de um ano
Viegas,Yvette;
Revista de Saúde Pública , 1970, DOI: 10.1590/S0034-89101970000100009
Abstract: the purpose of this investigation was to verify whether the acid fluophosphate solutions would give in young adults similar results like the ones obtained in children. in this study one topical application of acid fluophosphate solution, ph approximately 3, with 1.23% of fluoride, was done in 75 students with an average of 20 years of age. the percentage of difference between the control hemiarchs and the experimental ones was 27.66%. this reduction in the incidence of dental caries was statistically significant.
Gesta??o e cárie dental
Viegas,Yvette;
Revista de Saúde Pública , 1970, DOI: 10.1590/S0034-89101970000100011
Abstract: the purpose of this investigation was to verify if the incidence of dental decay increases during pregnancy.in this study 82 pregnant and 40 nonpregnant women were included. in both groups the incidence of attacked surfaces was studied in a period of six months. the observed incidence of dental caries between the groups was not statistically significant.
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