11,765 research outputs found
The Frisch elasticity in the Mercosur countries: A pseudo-panel approach
Copyright @ 2011 Brunel UniversityThis paper provides estimates for the Mercosur countries of the Frisch elasticity —i.e., the elasticity of substitution between
worked hours and real wages holding constant the marginal utility of wealth—. We find a strong heterogeneity, with estimated elasticities ranging from 12.8 in Argentina to -13.1 in Paraguay. Brazil and Uruguay are in between, both with negative values of -1.9 and -1.4, respectively. We argue that the
existence of severe liquidity constraints is the main reason behind the negative estimates found in Brazil, Paraguay and
Uruguay. The heterogeneity of these estimates is the outcome of differences in many relevant economic dimensions —ranging
from sectorial specialization to welfare state provisions and labor market specificities— all of them crucially affecting the socioeconomic situation of individuals. The diversity of Frisch
elasticities calls for the development of a cross-country (rather than a within-country) policy approach, since they crucially
affect the dynamics of the business cycle and business cycle synchronization is a step prior to the design of macroconvergence
policies in the Mercosur context
Discriminating between the von Neumann and L\"uders reduction rule
Given an ensemble of systems in an unknown state, as well as an observable
and a physical apparatus which performs a measurement of on
the ensemble, whose detailed working is unknown ('black box'), how can one test
whether the L\"uders or von Neumann reduction rule applies?Comment: 5 page
A model for multifragmentation in heavy-ion reactions
From an experimental point of view, clear signatures of multifragmentation
have been detected by different experiments. On the other hand, from a
theoretical point of view, many different models, built on the basis of totally
different and often even contrasting assumptions, have been provided to explain
them. In this contribution we show the capabilities and the shortcomings of one
of this models, a QMD code developed by us and coupled to the nuclear
de-excitation module taken from the multipurpose transport and interaction code
FLUKA, in reproducing the multifragmentation observations recently reported by
the INDRA collaboration for the reaction Nb + Mg at a 30 MeV/A projectile
bombarding energy. As far as fragment production is concerned, we also briefly
discuss the isoscaling technique by considering reactions characterized by a
different isospin asymmetry, and we explain how the QMD + FLUKA model can be
applied to obtain information on the slope of isotopic yield ratios, which is
crucially related to the symmetry energy of asymmetric nuclear matter.Comment: 8 pages, 2 figures, Proc. 12th International Conference on Nuclear
Reaction Mechanisms, Varenna, Italy, June 15 - 19 200
High energy extension of the FLUKA atmospheric neutrino flux
The atmospheric neutrino flux calculated with FLUKA was originally limited to
100-200 GeV for statistical reasons. In order to make it available for the
analysis of high energy events, like upward through-going muons detected by
neutrino telescopes, we have extended the calculation so to provide a reliable
neutrino yield per primary nucleon up to about 10**6 GeV/nucleon, as far as the
interaction model is concerned. We point out that the primary flux model above
100 GeV/nucleon still contributes with an important systematic error to the
neutrino flux.Comment: Extended version (10 pages) of the contribution to ICRC 2003, with
the addition of flux table
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