18 research outputs found
Cohomology and Deformations of -Lie algebra morphisms
The study of -Lie algebras which are natural generalization of Lie
algebras is motivated by Nambu Mechanics and recent developments in String
Theory and M-branes. The purpose of this paper is to define cohomology
complexes and study deformation theory of -Lie algebra morphisms. We discuss
infinitesimal deformations, equivalent deformations and obstructions. Moreover,
we provide various examples
Differential operators on supercircle: conformally equivariant quantization and symbol calculus
We consider the supercircle equipped with the standard contact
structure. The conformal Lie superalgebra K(1) acts on as the Lie
superalgebra of contact vector fields; it contains the M\"obius superalgebra
. We study the space of linear differential operators on weighted
densities as a module over . We introduce the canonical isomorphism
between this space and the corresponding space of symbols and find interesting
resonant cases where such an isomorphism does not exist
Preliminary results of the project A.I.D.A. (Auto Immunity: Diagnosis Assisted by computer)
In this paper, are presented the preliminary results of the A.I.D.A. (Auto Immunity: Diagnosis
Assisted by computer) project which is developed in the frame of the cross-border cooperation Italy-Tunisia.
According to the main objectives of this project, a database of interpreted Indirect ImmunoFluorescence (IIF)
images on HEp 2 cells is being collected thanks to the contribution of Italian and Tunisian experts involved in
routine diagnosis of autoimmune diseases. Through exchanging images and double reporting; a Gold Standard
database, containing around 1000 double reported IIF images with different patterns including negative tests,
has been settled. This Gold Standard database has been used for optimization of a computing solution (CADComputer
Aided Detection) and for assessment of its added value in order to be used along with an
immunologist as a second reader in detection of auto antibodies for autoimmune disease diagnosis. From the
preliminary results obtained, the CAD appeared more powerful than junior immunologists used as second
readers and may significantly improve their efficacy
Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU
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Climat, environnement et sociétés de la Préhistoire du sud tunisien: résultats préliminaires et perspectives de la recherche
We present the preliminary results of a Tunisian-Italian project of scientific collaboration
in the field of environmental studies and prehistoric and anthropological research
in southern Tunisia ruled by an interdisciplinary approach that includes geo-archeology,
geochronology, geochemistry, palynology, paleoanthropology and population genetics. The
research area is south of the Chott el Jerid and its surroundings, where the major physiographic
feature is a large playa which contained one of the mega lakes that existed in the Sahara
during wet periods in the late Quaternary. The region is a pivotal area between the Mediterranean
and the Sahara, then favorable to study the cultural diffusion and humans displacements
through different periods and environments.We present the preliminary results of a Tunisian-Italian project of scientific collaboration
in the field of environmental studies and prehistoric and anthropological research
in southern Tunisia ruled by an interdisciplinary approach that includes geo-archeology,
geochronology, geochemistry, palynology, paleoanthropology and population genetics. The
research area is south of the Chott el Jerid and its surroundings, where the major physiographic
feature is a large playa which contained one of the mega lakes that existed in the Sahara
during wet periods in the late Quaternary. The region is a pivotal area between the Mediterranean
and the Sahara, then favorable to study the cultural diffusion and humans displacements
through different periods and environments.Nous présentons les résultats préliminaires d’un projet Tuniso-Italien de collaboration
scientifique dans le domaine des études environnementales et de la recherche préhistorique
et anthropologique en Tunisie méridionale mené selon une approche interdisciplinaire
qui comprend la géo-archéologie, la géochronologie, la géochimie, la palynologie, la paléoanthropologie
et la génétique. La zone de recherche se trouve au sud du Chott el Jérid et ses
environs. Il s’agit d’une zone caractérisée par la présence de l’un des méga lacs qui existaient
dans le Sahara pendant les périodes humides à la fin du Quaternaire. La région est une zone
charnière entre la Méditerranée et le Sahara, donc favorable à l’étude des diffusions culturelles
et des déplacements humains à travers les différentes périodes et environnements