1435 research outputs found
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Due sermoni anonimi del sec. XIV in onore di San Francesco
No full textRIASSUNTO
L'articolo fornisce la prima edizione di due degli otto sermoni in festo sancti Francisci dal ms. 138 Vaticano Borghesiano. Il codice faceva parte della biblioteca pontificia di Avignone e, in particolare, fu presente nella collezione di papa Giovanni XXII tra il 1316 e il 1334. L'autore dei sermoni fu un anonimo frate minore francese, che ci appare come un predicatore dotto, esperto nella filosofia e teologia scolastica e magister di uno studium di futuri predicatori. I due sermoni si ncentrano sull'Ordine dei frati minori; in questo contesto san Francesco emerge come santo ascetico ed esemplare, presentato con un'immagine distante e modello di vita al quale ogni frate dovrebbe far riferimento e impegnarsi a imitare.
SUMMARY
The paper reports the first edition of two of the eight sermons in festo sancti Francisci from ms. 138 Fondo Borghesiano of the Vatican Library. The code was part of the papal library in Avignon and, more specifically, between 1316 and 1334 it was in the collection of Pope John xxii. The author of the sermons was an anonymous french Minor Friar. He appears as an erudite preacher, expert in scholastic philosophy and theology and acting as magister in a studium of future preachers. The two sermons focus on the Order of Minor Friars. In this context, St. Francis emerges as ascetic and exemplary, the Saint is depicted as a distant image that each friar should refer as a model to which to aspire
Brane Realization of Nambu Monopoles and Electroweak Strings
No full textIn the standard model, the electroweak Z-string can end on a Nambu monopole,
whose mass is calculated to be 689 GeV from the current precise experimental
data assuming the new particle with mass 125 GeV to be the Higgs boson. We
study an extension of the standard model with additional singlet and triplet
Higgs fields in the framework of N=1 supersymmetric field theory by using a
D-brane configuration in type IIA string theory. We construct a D-brane
configuration describing the electroweak symmetry breaking, and find a single
D2-brane configuration describing a Z-string and a Nambu monopole attached by a
Z-string in the standard model without an adjoint Higgs field. We further find
a single D2-brane configuration describing a composite of a 't Hooft-Polyakov
monopole and a Nambu monopole attached by a Z-string in an extended standard
model with an adjoint Higgs field. We compute the binding energy of the 't
Hooft-Polyakov and Nambu monopoles by solving a minimal surface area of a
D2-brane
Measuring general relativity effects in a terrestrial lab by means of laser gyroscopes
No full textGINGER is a proposed tridimensional array of laser gyroscopes with the aim of
measuring the Lense-Thirring effect, predicted by the General Relativity
theory, in a terrestrial laboratory environment. We discuss the required
accuracy, the methods to achieve it, and the preliminary experimental work in
this direction
Privacy in Distributed Monitoring
No full textIn many emerging applications, such as real-time traffic monitoring, financial analysis, sensor network monitoring an important task is the continuos monitoring of stream data. In these contexts where large amount of data arrive continually the data processing requires to access often valuable personal information. As a consequence, the entire monitoring process could put at risk the privacy of people represented in the stream data. In this paper, we study the privacy issues in distributed systems during the monitoring of thresholds functions, where several nodes contribute with their data to the monitoring of a specific event. We provide a privacy-preserving framework suitable to find an acceptable trade-off among privacy protection, data quality and system performance. Using real-life data from GPS devices of private cars, we demonstrate the effectiveness of our approach in a case study consisting of the monitoring of customers mobility behaviors; in other words, we show how techniques for efficient communication can be used while preserving the individual privacy of the actors who are participating to the collective analysis
The Magnetic Susceptibility of Strongly Interacting Matter across Deconfinement
No full textSUMMARY We propose a method to determine the total magnetic susceptibility of
strongly interacting matter by lattice QCD simulations, and present first
numerical results for the theory with two light flavors, which suggest a very
weak magnetic activity in the confined phase and the emergence of strong
paramagnetism in the deconfined, Quark-Gluon Plasma phase
The Maximal Abelian Gauge in SU(N) Gauge Theories and Thermal Monopoles for N = 3
No full textWe discuss and propose a proper extension of the Abelian projection based on
the Maximal Abelian Gauge to SU(N) gauge theories. Based, on that, we
investigate the properties of thermal Abelian monopoles in the deconfined phase
of the SU(3) pure gauge theory. Such properties are very similar to those
already found for SU(2), confirming the relevance of the magnetic component
close to Tc and the possible condensation of thermal monopoles as the
deconfinement temperature is crossed from above. Moreover, we study the
correlation functions among monopoles related to different U(1) subgroups,
which show interesting features and reveal the presence of non-trivial
interactions
Modellazione di un ciclo produttivo nel settore moda
No full textThe scheduling problem in fashion design. Modelling a mixed/flowsh
Landau-Zener transitions in the presence of harmonic noise
No full textSUMMARY We study the influence of off-diagonal harmonic noise on transitions in a
Landau-Zener model. We demonstrate that the harmonic noise can change the
transition probabilities substantially and that its impact depends strongly on
the characteristic frequency of the noise. In the underdamped regime of the
noise process, its effect is compared with the one of a deterministic
sinusoidally oscillating function. While altering the properties of the noise
process allows one to engineer the transitions probabilities, driving the
system with a deterministic sinusoidal function can result in larger and more
controlled changes of the transition probability. This may be relevant for
realistic implementations of our model with Bose-Einstein condensates in
noise-driven optical lattices
Optimal location problems with routing cost
No full textSUMMARY In the paper a model problem for the location of a given number of points
in a given region and with a given resources density is
considered. The main difference between the usual location problems and the
present one is that in addition to the location cost an extra {\it routing
cost} is considered, that takes into account the fact that the resources have
to travel between the locations on a point-to-point basis. The limit problem as
is characterized and some applications to airfreight systems are
shown
Laser cooling of rotation and vibration by optical pumping
No full textSUMMARY We have recently demonstrated that optical pumping methods combined with
photoassociation of ultra-cold atoms can produce ultra-cold and dense samples
of molecules in their absolute rovibronic ground state. More generally, both
the external and internal degrees of freedom can be cooled by addressing
selected rovibrational levels on demand. Here, we recall the basic concepts and
main steps of our experiments, including the excitation schemes and detection
techniques we use to achieve the rovibrational cooling of Cs2 molecules. In
addition, we present the determination of formation pathways and a theoretical
analysis explaining the experimental observations. These simulations improves
the spectroscopic knowledge required to transfer molecules to any desired
rovibrational level