Las luces de la pobreza. Franciscanos y reforma en la Universidad de Córdoba del Tucumán

El siglo XVIII fue un tiempo de reformas administrativas y educativas en la Universidad de Córdoba del Tucumán, producto del plan de la nueva dinastía que ocupó el trono de España. Luego de la expulsión de los jesuitas (sus primitivos administradores) y la toma de posesión de la corporación por los franciscanos (fervientes adherentes al proyecto monárquico) los cambios se aceleraron. El trabajo parte de la hipótesis de que el acompañamiento de la reforma borbónica fue posible gracias a la renovación interna de la disciplina eclesial que experimentó la Orden en el siglo XVIII. Se estudia el pensamiento de los reformadores educativos seráficos y cómo sus ideas se plasmaron en el nuevo currículum de la universidad cordobesa.The eighteenth century was a time of administrative and educational reforms in the University of Córdoba of the Tucumán, which were the result of the plan followed by the new dynasty coming to the throne of Spain. After the Jesuits, its former administrators, were expelled, and once the Franciscans had taken charge of the corporation, the changes were speeded up because of their passionate support to the monarchical project. This article starts from the hypothesis that this support to the monarchical reform was possible thanks to the revival of ecclesiastical discipline within the Order itself in the eighteenth century. The seraphic educational reformers thought is herein studied as well as how their ideas were expressed in the new curriculum of the University of Córdoba of the Tucumán

Dispersion representations and anomalous singularities of the triangle diagram

We discuss dispersion representations for the triangle diagram $F(p_1^2,p_2^2,q^2)$, the single dispersion representation in $q^2$ and the double dispersion representation in $p_1^2$ and $p_2^2$, with special emphasis on the appearance of the anomalous singularities and the anomalous cuts in these representations. For the double dispersion representation in $p_1^2$ and $p_2^2$, the appearance of the anomalous cut in the region $q^2>0$ is demonstrated, and a new derivation of the anomalous double spectral density is given. We point out that the double spectral representation is particularly suitable for applications in the region of $p_1^2$ and/or $p_2^2$ above the two-particle thresholds. The dispersion representations for the triangle diagram in the nonrelativistic limit are studied and compared with the triangle diagram of the nonrelativistic field theory.Comment: 10 pages, revtex, added a reference, version to be published in Phys. Rev.

A Power-Efficient Methodology for Mapping Applications on Multi-Processor System-on-Chip Architectures

This work introduces an application mapping methodology and case study for multi-processor on-chip architectures. Starting from the description of an application in standard sequential code (e.g. in C), first the application is profiled, parallelized when possible, then its components are moved to hardware implementation when necessary to satisfy performance and power constraints. After mapping, with the use of hardware objects to handle concurrency, the application power consumption can be further optimized by a task-based scheduler for the remaining software part, without the need for operating system support. The key contributions of this work are: a methodology for high-level hardware/software partitioning that allows the designer to use the same code for both hardware and software models for simulation, providing nevertheless preliminary estimations for timing and power consumption; and a task-based scheduling algorithm that does not require operating system support. The methodology has been applied to the co-exploration of an industrial case study: an MPEG4 VGA real-time encoder

The role of multiplicative noise in critical dynamics

We study the role of multiplicative stochastic processes in the description of the dynamics of an order parameter near a critical point. We study equilibrium, as well as, out-of-equilibrium properties. By means of a functional formalism, we built the Dynamical Renormalization Group equations for a real scalar order parameter with $Z_2$ symmetry, driven by a class o multiplicative stochastic processes with the same symmetry. We have computed the flux diagram, using a controlled $\epsilon$-expansion, up to order $\epsilon^2$. We have found that, for dimensions $d=4-\epsilon$, the additive dynamic fixed point is unstable. The flux runs to a {\em multiplicative fixed point} driven by a diffusion function $G(\phi)=1+g^*\phi^2({\bf x})/2$, where $\phi$ is the order parameter and $g^*=\epsilon^2/18$ is the fixed point value of the multiplicative noise coupling constant. We show that, even though the position of the fixed point depends on the stochastic prescription, the critical exponents do not. Therefore, different dynamics driven by different stochastic prescriptions (such as It\^o, Stratonovich, anti-It\^o and so on) are in the same universality class.Comment: 34 pages, 14 figures. Extended version. Final version accepted for publication in Physica A: Statistical Mechanics and its Application

Metagenomes in the Borderline Ecosystems of the Antarctic Cryptoendolithic Communities.

Antarctic cryptoendolithic communities are microbial ecosystems dwelling inside rocks of the Antarctic desert. We present the first 18 shotgun metagenomes from these communities to further characterize their composition, biodiversity, functionality, and adaptation. Future studies will integrate taxonomic and functional annotations to examine the pathways necessary for life to evolve in the extremes

Theta dependence of the vacuum energy in the SU(3) gauge theory from the lattice

We report on a precise computation of the topological charge distribution in the SU(3) Yang--Mills theory. It is carried out on the lattice with high statistics Monte Carlo simulations by employing the definition of the topological charge suggested by Neuberger's fermions. We observe significant deviations from a Gaussian distribution. Our results disfavour the theta behaviour of the vacuum energy predicted by instanton models, while they are compatible with the expectation from the large Nc expansion.Comment: Plain latex, 4 pages, 2 figure

Localization of RFID tags for environmental monitoring using UAV

The paper presents the experimental implementation of a method to localize RFID tags in an outdoor environment using UAV. During the installation phase, it is possible to measure the coordinates of the installation point using a topographic GNSS receiver. The tags positions can evolve with time and after a specific desired period of time (e. g. 1 month or 1 year) it is necessary to relocate them. This can be done estimating the distance between the tags and a UAV, exploiting the measurements of the Received Signal Strength Indicator (RSSI). The tags are placed over an outdoor test area and a large amount of RSSI measurements are made in different position, well distributed in space, using a UAV equipped with a specific tag reader. On such data, a multilateration-based localization algorithm is applied achieving good results. The description of RFID tags is reported together with the localization algorithm, the test description and the preliminary results