Bifurcations in Boltzmann-Langevin One Body dynamics for fermionic systems

We investigate the occurrence of bifurcations in the dynamical trajectories depicting central nuclear collisions at Fermi energies. The quantitative description of the reaction dynamics is obtained within a new transport model, based on the solution of the Boltzmann-Langevin equation in three dimensions, with a broad applicability for dissipative fermionic dynamics. Dilute systems formed in central collisions are shown to fluctuate between two energetically favourable mechanisms: reverting to a compact shape or rather disintegrating into several fragments. The latter result can be connected to the recent observation of bimodal distributions for quantities characterising fragmentation processes and may suggest new investigations

Estimating Attendance From Cellular Network Data

We present a methodology to estimate the number of attendees to events happening in the city from cellular network data. In this work we used anonymized Call Detail Records (CDRs) comprising data on where and when users access the cellular network. Our approach is based on two key ideas: (1) we identify the network cells associated to the event location. (2) We verify the attendance of each user, as a measure of whether (s)he generates CDRs during the event, but not during other times. We evaluate our approach to estimate the number of attendees to a number of events ranging from football matches in stadiums to concerts and festivals in open squares. Comparing our results with the best groundtruth data available, our estimates provide a median error of less than 15% of the actual number of attendees

Taxation and Labor Force Participation: The Case of Italy

Italy has the lowest labor force participation of women among OECD countries. Moreover, the participation rate of married women is positively correlated to their husbands' income. We show that a high tax schedule together with tax credits and transfers raise the burden of two-earner house- holds, generating disincentives to work. We estimate a structural labor supply model for women, and use the estimated parameters to simulate the eects of alternative revenue-neutral tax systems. We nd that joint taxation implies a drop in the participation rate. Conversely, working tax credit and gender-based taxation boost it, with the eects of the former concentrated on low educated women.female labor force participation, Italian tax system, second earner tax rate, joint taxa- tion, gender-based taxation, working tax credit JEL Classication: J21, J22, H31

Taxation and Labor Force Participation: The Case of Italy

Italy has the lowest labor force participation of women among OECD countries. Moreover, the participation rate of married women is positively correlated to their husbands' income. We show that a high tax schedule together with tax credits and transfers raise the burden of two-earner households, generating disincentives to work. We estimate a structural labor supply model for women, and use the estimated parameters to simulate the effects of alternative revenue-neutral tax systems. We find that joint taxation implies a drop in the participation rate. Conversely, working tax credit and gender-based taxation boost it, with the effects of the former concentrated on low educated women.female labor force participation, Italian tax system, marginal tax rate, joint taxation, gender-based taxation, working tax credit

Probing the nuclear EOS with fragment production

We discuss fragmentation mechanisms and isospin transport occurring in central collisions between neutron rich systems at Fermi energies. In particular, isospin effects are analyzed looking at the correlations between fragment isotopic content and kinematical properties. Simulations are based on an approximate solution of the Boltzmann-Langevin (BL) equation. An attempt to solve the complete BL equation, by introducing full fluctuations in phase space is also discussed.Comment: 10 pages, 4 figures; Int.Nucl.Phys.Conf., Tokyo June 07, to appear in Nucl.Phys.A (Elsart