5,368 research outputs found
A characterization of dual quermassintegrals and the roots of dual steiner polynomials
For any finite with , we provide a
characterization of those tuples of positive numbers
which are dual querma\ss integrals of two star bodies. It turns out that this
problem is related to the moment problem. Based on this relation we also get
new inequalities for the dual querma\ss integrals. Moreover, the above
characterization will be the key tool in order to investigate structural
properties of the set of roots of dual Steiner polynomials of star bodies
Prompt photon yield and coefficient from gluon fusion induced by magnetic field in heavy-ion collision
We compute the production of prompt photons and the harmonic
coefficient in relativistic heavy-ion collisions induced by gluon fusion in the
presence of an intense magnetic field, during the early stages of the reaction.
The calculations take into account several parameters which are relevant to the
description of the experimental transverse momentum distribution, and elliptic
flow for RHIC and LHC energies. The main imput is the strength of the magnetic
field which varies in magnitude from 1 to 3 times the pion mass squared, and
allows the gluon fusion that otherwise is forbidden in the absence of the
field. The high gluon occupation number and the value of the saturation scale
also play an important role in our calculation, as well as a flow velocity and
geometrical factors. Our results support the idea that the origin of at least
some of the photon excess observed in heavy-ion experiments may arise from
magnetic field induced processes, and gives a good description of the
experimental data.Comment: 6 pages, 2 figures, conference paper from ISMD 201
Desde África a Latinoamérica : encuentro diacrónico de mujeres pintoras
In this article, we propose to explain a situation that presents some
complexity because it refers to different levels, all of which are given
off to relate the work of women painters which, despite being produced
in different times and contexts such geographically distant between
them, they share certain biographical circumstances. All in all, we aim
to link here all the limitations that they found in their respective artistic
paths, it means, exposing their lives, something crucial in the path
taken by each of them, from Peru in Latin America, via Canary Islands
until South Africa.
To this purpose we find appropriate the feminist theory. Which theory
is now plural, heterogeneous, once the scheme has exceeded monolithic
Eurocentric, of the initial feminism new codes and change the
hegemonic discourse. Opens the way for minorities in particular, we
are interested in highlighting the importance of autobiography to
legitimize marginalized spaces, mostly in the domestic field. What we
want, taking into account diversity, is to meet the specific testimony
to trace the traits that unifies the experience of a Latin American
painter, one of the Canary Islands and Africa
An Application of SVM to Lost Packets Reconstruction in Voice-Enabled Services
Voice over IP (VoIP) is becoming very popular due to the huge range of services that can be implemented by integrating different media (voice, audio, data, etc.). Besides, voice-enabled interfaces for those services are being very actively researched. Nevertheless the impoverishment of voice quality due to packet losses severely affects the speech recognizers supporting those interfaces ([8]). In this paper, we have compared the usual lost packets reconstruction method with an SVM-based one that outperforms previous results
How primary school children understand the sample space linked to different types of events
Project PID2019-105601GB-I00/AEI/10.13039/501100011033, Research group FQM-126
A rapid procedure for the isolation of plasmid DNA from environmental bacteria
The INSTA-MINI-PREP method, a rapid protocol for plasmid DNA extraction, was originally developed to prepare plasmid DNA from 1 to 3 ml miniprep Escherichia coli cultures. Direct extraction of plasmid DNA is achieved by a two-phase solution which is separated by centrifugation in the presence of the INSTA-PREP gel barrier material. This method has been successfully tested on various environmental Salmonella strains, although it was not suitable for Pseudomonas aeruginosa and enterococci strains. The INSTA-MINI-PREP method is a new alternative procedure to screen plasmid contents of Salmonella and E. coli strains rapidly and easily
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