179,660 research outputs found
Motions of Curves in the Projective Plane Inducing the Kaup-Kupershmidt Hierarchy
No full textThe equation of a motion of curves in the projective plane is deduced. Local flows are defined in terms of polynomial differential functions. A family of local flows inducing the Kaup-Kupershmidt hierarchy is constructed. The integration of the congruence curves is discussed. Local motions defined by the traveling wave cnoidal solutions of the fifth-order Kaup-Kupershmidt equation are describe
Conservazione e restauri nel centro storico di Genova.
No full textÈ difficile restituire un quadro esaustivo di quanto avvenuto a Genova, nel dibattito e nella prassi del restauro, dagli anni Sessanta del secolo scorso. Le difficoltà dipendono, tra le altre, da ragioni strutturali legate alla assai stratificata storia e alla complessa conformazione anche orografica della città. Il contributo cerca tuttavia di ripercorrere i principali interventi di restauro realizzati a diverse scale e in diverse parti del Centro antico di Genova a partire dagli anni settanta del secolo scorso e concentrandosi poi sugli utlimi dcenni. La lettura critica proposta intende porre in evidenza le premesse ideali, le singolarità rpogettuali e tecnico-realizzative di quegli interventi e, soprattutto, il loro impatto sulla città storica efatizzandone gli elementi di sistema nell'ambito della più ampia pianificazione urbana
Deformation of Surfaces in Lie Sphere Geometry
No full textThe theory of surfaces in Euclidean space can be naturally formulated in the more general context of Legendre surfaces into the space of contact elements. We address the question of deformability of Legendre surfaces with respect to the symmetry group of Lie sphere contact transformations from the point of view of the deformation theory of submanifolds in homogeneous spaces. Necessary and sufficient conditions are provided for a Legendre surface to admit non-trivial deformations, and the corresponding existence problem is discusse
Symplectic Applicability of Lagrangian Surfaces
No full textWe develop an approach to affine symplectic invariant geometry of Lagrangian surfaces by the method of moving frames. The fundamental invariants of elliptic Lagrangian immersions in affine symplectic four-space are derived together with their integrability equations. The invariant setup is applied to discuss the question of symplectic applicability for elliptic Lagrangian immersions. Explicit examples are considere
Bibliographie de Sandrine Musso
No full textThèseSandrine MUSSO, 2008. « Sida et minorités postcoloniales. Histoire sociale, usages et enjeux de la cible “migrants” dans les politiques du sida en France », thèse pour l’obtention du doctorat d’anthropologie sociale et ethnologie de l’EHESS, préparée sous la direction de Jean-Pierre Dozon, 446 pages.Direction d’ouvrage, de numéro de revue, de dossier thématique ABRIOL S., BROQUA C., CHANTRAINE R., CHENU C., DOURIS V., LOUX F., MOLLE F. et MUSSO S. (dir.), 2021. VIH/sida : l’épidémie n’e..
3D-electrical resistivity tomography monitoring of salt transport in homogeneous and layered soil samples
No full textMonitoring transport of dissolved substances in soil deposits is particularly relevant where safety is concerned, as in the case of geo-environmental barriers. Geophysical methods are very appealing, since they cover a wide domain, localising possible preferential flow paths and providing reliable links between geophysical quantities and hydrological variables. This paper describes a 3D laboratory application of Electrical Resistivity Tomography (ERT) used to monitor solute transport processes. Dissolution and transport tests on both homogeneous and heterogeneous samples were conducted in an instrumented oedometer cell. ERT was used to create maps of electrical conductivity of the monitored domain at different time intervals and to estimate concentration variations within the interstitial fluid. Comparisons with finite element simulations of the transport processes were performed to check the consistency of the results. Tests confirmed that the technique can monitor salt transport, infer the hydro-chemical behaviour of heterogeneous geomaterials and evaluate the performances of clay barrier
Estimation of the hydraulic parameters of unsaturated samples by electrical resistivity tomography
No full textIn situ and laboratory experiments have shown that electrical resistivity tomography (ERT) is an effective tool to image transient phenomena in soils. However, its application in quantifying soil hydraulic parameters has been limited. In this study, experiments of water inflow in unsaturated soil samples were conducted in an oedometer equipped to perform three-dimensional electrical measurements. Reconstructions of the electrical conductivity at different times confirmed the usefulness of ERT for monitoring the evolution of water content. The tomographic reconstructions were subsequently used in conjunction with a finite-element simulation to infer the water retention curve and the unsaturated hydraulic conductivity. The parameters estimated with ERT agree satisfactorily with those determined using established techniques, hence the proposed approach shows good potential for relatively fast characterisations. Similar experiments could be carried out on site to study the hydraulic behaviour of the entire soil deposi
Lana Musso, Phi Mu
No full textLana Musso was a student at Jacksonville State University in the 1960s. In 1969-1970 she was a member of Phi Mu.https://digitalcommons.jsu.edu/lib-ac-histimg/27569/thumbnail.jp
Lana Musso, 1971 Miss Homecoming Candidate
No full textLana Musso was a student and Miss Homecoming candidate at Jacksonville State University in 1971-1972. She was sponsored by Kappa Sigma. (circa October 18, 1971)https://digitalcommons.jsu.edu/lib-ac-histimg/42073/thumbnail.jp
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