Application-layer Performance Analysis of PRIME in Smart Metering Networks

This paper assesses the performance of actual PRIME v1.3.6 and PRIME v1.4 systems when used for Smart Metering applications. The analysis is performed at the application level using the DLMS/COSEM stack. Hence, it considers performance indicators that are of practical interest for distribution system operators, such as the availability and the average time needed to read the energy load profile of all the meters. To this end, two test networks with 112 smart meters have been deployed in the laboratory (to ensure the stability of the network). In one of them all the Service Nodes communicate directly with the Base Node, while there exist up to 5 switching levels in the other tested network. First, the PRIME v1.3.6 system is evaluated, stressing the significant performance gain that can be obtained by implementing some MAC layer strategies, which are compatible with the specification but not specifically defined on it. Then,the improvement offered by the PRIME v1.4 system is assessed.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Nonlinear gauge realization of spacetime symmetries including translations

We present a general scheme for the nonlinear gauge realizations of space-time groups on coset spaces of the groups considered. In order to show the relevance of the method for the rigorous treatment of the translations in gravitational gauge theories, we apply it in particular to the affine group. This is an illustration of the family of spacetime symmetries having the form of a semidirect product H ⊗ T, where H is the stability subgroup and T are the translations. The translational component of the connection behaves like a true tensor under H when coset realizations are involved. c Plenum Publishing CorporationPeer Reviewe

Los cortes editoriales en las variantes abreviadas del Burlador y en el Tan largo me lo fiáis

Se trata de plantear sobre puntos precisos el debate sobre la prioridad textual y cronológica de Tan largo me lo fiáis, objeto de continuas discusiones entre los investigadores, tras la edición de El burlador de Sevilla hecha por Xavier A. Fernández (1982), puntos que pueden contribuir a arrojar luz sobre el proceso de transmisión de El burlador y sobre su relación con Tan largo, analizándose los tres pasajes truncados en Tan largo que tienen contraparte en el texto de la princeps. The purpose of this article is to set, on precise points, the debate about the textual and chronologic priority of Tan largo me lo fiáis, object of many discussions between the investigators after Xavier A. Fernández’s edition of El burlador de Sevilla (1982); points that may contribute to enlighten El burlador’s process of transmission and its relation with Tan largo, analyzing the three severed passages in Tan largo that have a counterpart in the text of the princeps edition

Observaciones críticas sobre la autoría de El rey don Pedro en Madrid

Según Rodríguez, la autoría de esta comedia corresponde a Andrés de Claramonte, vistas la cantidad de coincidencias que presenta El rey don Pedro en Madrid con otras obras de este autor. La obra en cuestión guarda, por una parte, semejanzas con El burlador de Sevilla que han hecho a algunos pensar en que podría ser de Tirso; por otra, el manuscrito más antiguo la atribuye a Andrés de Claramonte, con cuya obra Deste agua no beberé guarda puntos en contacto. According to Rodríguez, the authorship of this comedy belongs to Andrés de Claramonte, because of the many coincidences between El rey don Pedro en Madrid and other plays by this author. This play has, on one hand, similarities with El burlador de Sevilla, which point that it could be Tirso’s; on the other hand, the oldest manuscript attributes it to Andrés de Claramonte, and it has contact points with this author’s play Deste agua no beberé

Energy Taxis toward Host-Derived Nitrate Supports a Salmonella Pathogenicity Island 1-Independent Mechanism of Invasion

Salmonella enterica serovar Typhimurium can cross the epithelial barrier using either the invasion-associated type III secretion system (T3SS-1) or a T3SS-1-independent mechanism that remains poorly characterized. Here we show that flagellum-mediated motility supported a T3SS-1-independent pathway for entering ileal Peyer’s patches in the mouse model. Flagellum-dependent invasion of Peyer’s patches required energy taxis toward nitrate, which was mediated by the methyl-accepting chemotaxis protein (MCP) Tsr. Generation of nitrate in the intestinal lumen required inducible nitric oxide synthase (iNOS), which was synthesized constitutively in the mucosa of the terminal ileum but not in the jejunum, duodenum, or cecum. Tsr-mediated invasion of ileal Peyer’s patches was abrogated in mice deficient for Nos2, the gene encoding iNOS. We conclude that Tsr-mediated energy taxis enables S. Typhimurium to migrate toward the intestinal epithelium by sensing host-derived nitrate, thereby contributing to invasion of Peyer’s patches

Comparative study of quantum anharmonic potentials

We perform a study of various anharmonic potentials using a recently developed method. We calculate both the wave functions and the energy eigenvalues for the ground and first excited states of the quartic, sextic and octic potentials with high precision, comparing the results with other techniques available in the literature.Comment: 13 pages, 8 figures and 2 tables; revtex