109 research outputs found
Maximal differential uniformity polynomials
We provide an explicit infinite family of integers such that all the
polynomials of of degree have maximal differential
uniformity for large enough. We also prove a conjecture of the third author
in these cases
La plus-value des loisirs des Ă©ducateurs sociaux et des Ă©ducatrices sociales en milieu institutionnel
Dans ce travail, nous abordons la question des loisirs en institution et la fonction quâils peuvent avoir auprĂšs des Ă©ducateurs sociaux et Ă©ducatrices sociales ainsi quâauprĂšs des bĂ©nĂ©ficiaires. Ayant chacune eu lâoccasion de pratiquer notre loisir en institution, câest suite Ă notre premiĂšre formation pratique que le thĂšme de notre recherche est nĂ©. Nous nous sommes questionnĂ©es quant Ă la potentielle plus-Ââvalue du partage des passions amenĂ©es par les professionnel·le·s en institution sociale. Nous avons dĂ©cidĂ© de dĂ©velopper dans la premiĂšre partie du travail quatre concepts en lien avec notre question de recherche : les loisirs, la crĂ©ativitĂ© et lâexpression, la motivation et lâapprentissage social. Lors de nos analyses, nous avons mis en lumiĂšre les propos des professionnel·le·s, recueillis lors de nos entretiens sur le sujet, en y alliant les thĂ©ories dĂ©veloppĂ©es dans les concepts. Au terme de notre recherche, notre travail dĂ©montre que le fait dâutiliser son loisir ou sa passion dans lâaction Ă©ducative peut apporter diffĂ©rents bienfaits autant pour les professionnel·le·s que pour les bĂ©nĂ©ficiaires (motivation, crĂ©ation de lien, compĂ©tences supplĂ©mentaires etc.). Nous concluons ce travail en exposant nos rĂ©sultats, en dĂ©crivant notre processus et notre dĂ©marche de recherche ainsi quâen proposant certaines pistes dâaction
Condensation of helium in aerogels and athermal dynamics of the Random Field Ising Model
High resolution measurements reveal that condensation isotherms of He in
a silica aerogel become discontinuous below a critical temperature. We show
that this behaviour does not correspond to an equilibrium phase transition
modified by the disorder induced by the aerogel structure, but to the
disorder-driven critical point predicted for the athermal out-of-equilibrium
dynamics of the Random Field Ising Model. Our results evidence the key role of
non-equilibrium effects in the phase transitions of disordered systems.Comment: 5 p + suppl. materia
ALGEBRAIC GEOMETRY CODES OVER ABELIAN SURFACES CONTAINING NO ABSOLUTELY IRREDUCIBLE CURVES OF LOW GENUS
We provide a theoretical study of Algebraic Geometry codes constructed from abelian surfaces defined over finite fields. We give a general bound on their minimum distance and we investigate how this estimation can be sharpened under the assumption that the abelian surface does not contain low genus curves. This approach naturally leads us to consider Weil restrictions of elliptic curves and abelian surfaces which do not admit a principal polarization
Flavivirus reverse genetic systems, construction techniques and applications: A historical perspective
AbstractThe study of flaviviruses, which cause some of the most important emerging tropical and sub-tropical human arbovirus diseases, has greatly benefited from the use of reverse genetic systems since its first development for yellow fever virus in 1989. Reverse genetics technology has completely revolutionized the study of these viruses, making it possible to manipulate their genomes and evaluate the direct effects of these changes on their biology and pathogenesis. The most commonly used reverse genetics system is the infectious clone technology. Whilst flavivirus infectious clones provide a powerful tool, their construction as full-length cDNA molecules in bacterial vectors can be problematic, laborious and time consuming, because they are often unstable, contain unwanted induced substitutions and may be toxic for bacteria due to viral protein expression. The incredible technological advances that have been made during the past 30years, such as the use of PCR or new sequencing methods, have allowed the development of new approaches to improve preexisting systems or elaborate new strategies that overcome these problems. This review summarizes the evolution and major technical breakthroughs in the development of flavivirus reverse genetics technologies and their application to the further understanding and control of these viruses and their diseases
ClĂ©on â Quartier des Arts et des Fleurs, Les Feugrais, nord de l'Ă©glise Saint-Martin
Le diagnostic archĂ©ologique rĂ©sultait dâun projet de rĂ©amĂ©nagement urbain dâune surface dâun peu plus de 8 531 m2, du centre-ville de ClĂ©on. Il concerne les parcelles cadastrĂ©es AO 703, 774, 775, 776, 777, 702, 79 285 pp et 103. Les terrains se trouvent directement au nord de lâactuelle mairie. Au xixe s., ces espaces Ă©taient construits de maisons en briques et en calcaire, agrĂ©mentĂ©es de jardins privatifs. Nous sommes intervenus aprĂšs la dĂ©molition de ces bĂątiments et la dĂ©pose des diffĂ©ren..
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