Laughlin’s Ansatz to explain the fractional Quantum Hall effect is derived by coupling a particle associated with “exotic” the two-fold central extension of the planar Galilei group. The reduced system is identical to the one used to describe the dynamics of vortices in an incompressible planar fluid.

Purpose: In the current study, using different radiobiological models, tumor control probability (TCP) and normal tissue complication probability (NTCP) of radiotherapy plans were calculated for three-dimensional conformal radiation therapy (3D-CRT) and intensity modulated radiation therapy (IMRT) of prostate cancer.Methods and Materials: 10 prostate plans were randomly selected among patients ...

background: bone tissue engineering requires materials that are biocompatible, mechanically suited for bone function, integrated with the host skeleton, and support osteoinduction of the implanted cells for new bone formation. the aim of this study was to compare the osteogenic potential of xenograft with hydroxyapatite/β- tricalcium phosphate (ha/β-tcp) scaffold. methods: new zealand rabbits (...

We study an Adaptive Window Protocol (AWP) with general increase and decrease profiles in the presence of window dependent random losses. We derive a steady-state Kolmogorov equation, and then obtain its solution in analytic form for particular TCP versions proposed for high speed networks, such as Scalable TCP and HighSpeed TCP. We also relate window evolution under an AWP to workload process ...

This paper focuses on the structure and function, as well interweavings, variations integrations of three types scientific writing (the dialogue, treatise, essay) to which Italian pedagogy has focused only partially. From reflections presented through examples given (Galilei, Darwin, Piaget) it emerges that, starting with "scientific revolution," renewal science also taken place contribution wr...

In the framework of Galilei classical and mechanics (i.e. , generally relativistic classical mechanics on a spacetime with absolute time) developed by Jadczyk and Modugno, we analyse systematically the relations between symmetries of the geometric objects. We show that the (holonomic) infinitesimal symmetries of the cosymplectic structure and of its potentials are also symmetries of spacelike m...

L. Viola1,2∗, R. Onofrio1† and T. Calarco3‡ 1 Dipartimento di Fisica “G. Galilei”, Università di Padova, and INFN, Sezione di Padova, Via Marzolo 8, Padova, Italy 35131 2 Department of Physics, Massachusetts Institute of Technology, 12-127, 77 Massachusetts Ave., Cambridge, MA 02139 3 Dipartimento di Fisica, Università di Ferrara, and INFN, Sezione di Ferrara, Via Paradiso 12, Ferrara, Italy 44...

Relativistic and nonrelativistic anyons are described in a unified formalism by means of the coadjoint orbits of the symmetry groups in the free case as well as when there is an interaction with a constant electromagnetic field. To deal with interactions we introduce the extended Poincaré and Galilei Maxwell groups.

The semiclassical approximation for electron wave-packets in crystals leads to equations which can be derived from a Lagrangian or, under suitable regularity conditions, in a Hamiltonian framework. In the plane, these issues are studied using the method of the coadjoint orbit applied to the “enlarged” Galilei group.