3,854 research outputs found
The minimum discriminant of number fields of degree 8 and signature (2,3)
In this paper we describe how to use the algorithmic methods provided by
Hunter and Pohst in order to give a complete classification of number fields of
degree 8 and signature (2,3) with absolute discriminant less than a certain
bound. The choice of this bound comes from the local corrections given by prime
ideals to the lower estimates for discriminants obtained with the
Odlyzko-Poitou-Serre method.Comment: 8 pages: shortened with respect to the previous version, some known
theoretical details have been transferred on the website together with tables
and dat
Underground Muon Physics with the MACRO experiment
Underground muon events detected by the MACRO experiment at Gran Sasso have
been studied for different purposes. The studies include the vertical muon
intensity measurement, multiplicity distribution, lateral and angular muon
distribution and searches for substructures inside muon bundles. These analyses
have contributed to bring new insights in cosmic ray physics, in particular in
the framework of primary cosmic ray composition studies. Moreover, this
activity allows the testing and tuning of Monte Carlo simulations, in
particular for aspects associated with models of hadronic interactions and muon
propagation through the rock.Comment: 6 pages, 4 EPS figures included with epsfig, uses espcrc2.sty Talk
given at the Sixth Topical Seminar on Neutrino and Astroparticle Physics, San
Miniato, Italy, 17-21 May 199
Progresses in the validation of the FLUKA atmospheric neutrino flux calculations
The FLUKA calculation of the atmospheric neutrino fluxes have been
cross-checked by comparing predictions on lepton fluxes in atmosphere to
experimental data. The dependence of predicted neutrino fluxes on the shape and
normalization of primary spectrum is also investigatedComment: Presented at TAUP2001 (Sep. 8-12, Assergi, Italy). 5 pages, 1 figur
The hadronic models for cosmic ray physics: the FLUKA code solutions
FLUKA is a general purpose Monte Carlo transport and interaction code used
for fundamental physics and for a wide range of applications. These include
Cosmic Ray Physics (muons, neutrinos, EAS, underground physics), both for basic
research and applied studies in space and atmospheric flight dosimetry and
radiation damage. A review of the hadronic models available in FLUKA and
relevant for the description of cosmic ray air showers is presented in this
paper. Recent updates concerning these models are discussed. The FLUKA
capabilities in the simulation of the formation and propagation of EM and
hadronic showers in the Earth's atmosphere are shown.Comment: 8 pages, 9 figures. Invited talk presented by M.V. Garzelli at
ISVHECRI2006, International Symposium on Very High Energy Cosmic Rays,
Weihai, China, August 15 - 22 200
Integrated preclinical cardiovascular prevention: a new paradigm to face growing challenges of cardiovascular disease
Cardiovascular disease (CVD) still represents the leading cause of mortality and morbidity worldwide. Despite considerable improvements in the prognosis of CVD and the significant reduction of CVD mortality obtained during the past half century, patients developing CVD, even though satisfactorily treated, still carry coronary artery disease and remain at risk for advanced CVD. Thus, the healthcare and socioeconomic burden linked to CVD remains high. As a result, more effective CVD prevention strategies remain crucial. 'Population strategies' and 'high-risk' approaches both have limitations and have often been viewed as alternative solutions. This persistent dualism could be overcome with the promotion of integrated prevention strategies based on a systematic evaluation of the total risk of disease, at both a population and an individual level. New approaches are also needed to reach people earlier in the course of the vascular disease and, possibly, to prevent risk factors and reduce CVD clinical manifestation
Performance of a large limited streamer tube cell in drift mode
The performance of a large (3x3 ) streamer tube cell in drift mode is
shown. The detector space resolution has been studied using cosmic muons
crossing an high precision silicon telescope. The experimental results are
compared with a GARFIELD simulation.Comment: 18 pages, 7 figures. Accepted by Nucl. Instr. and Methods
The Topological Non-connectivity Threshold and magnetic phase transitions in classical anisotropic long-range interacting spin system
We analyze from the dynamical point of view the classical characteristics of
the Topological Non-connectivity Threshold (TNT), recently introduced in
F.Borgonovi, G.L.Celardo, M.Maianti, E.Pedersoli, J.Stat.Phys.,116,516(2004).
This shows interesting connections among Topology, Dynamics, and
Thermo-Statistics of ferro/paramagnetic phase transition in classical spin
systems, due to the combined effect of anisotropy and long-range interactions.Comment: 6 revtex pages, 4 .eps figures Contribution presented at the 3rd
Conference NEXT-Sigma-Phi News, Expectations, and Trends in Statistical
Physics, August 13-18 2005, Kolymbari, Crete. For related results see also
cond-mat/0402270 cond-mat/0410119 cond-mat/0505209 cond-mat/0506233
cond-mat/051007
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