Non-centralized Control for Flow-based Distribution Networks: A Game-theoretical Insight

This paper solves a data-driven control problem for a flow-based distribution network with two objectives: a resource allocation and a fair distribution of costs. These objectives represent both cooperation and competition directions. It is proposed a solution that combines either a centralized or distributed cooperative game approach using the Shapley value to determine a proper partitioning of the system and a fair communication cost distribution. On the other hand, a decentralized noncooperative game approach computing the Nash equilibrium is used to achieve the control objective of the resource allocation under a non-complete information topology. Furthermore, an invariant-set property is presented and the closed-loop system stability is analyzed for the non cooperative game approach. Another contribution regarding the cooperative game approach is an alternative way to compute the Shapley value for the proposed specific characteristic function. Unlike the classical cooperative-games approach, which has a limited application due to the combinatorial explosion issues, the alternative method allows calculating the Shapley value in polynomial time and hence can be applied to large-scale problems.Generalitat de Catalunya FI 2014Ministerio de Ciencia y Educación DPI2016-76493-C3-3-RMinisterio de Ciencia y Educación DPI2008-05818Proyecto europeo FP7-ICT DYMASO

Actividades de I+D en el campo de la accesibilidad en CETTICO

[Resumen] En este artículo se hará un breve descripción del Centro de Transferencia Tecnológica en Informática y Comunicaciones (CETTICO), de sus secciones y, sobre todo, se hará hincapié en las principales actividades de I+D sobre accesibilidad que se realizan en dicho centro

Energy Efficiency of Hybrid-Power HetNets: A Population-like Games Approach

In this paper, a distributed control scheme based on population games is proposed. The controller is in charge of dealing with the energy consumption problem in a Heterogeneous Cellular Network (HetNet) powered by hybrid energy sources (grid and renewable energy) while guaranteeing appropriate quality of service (QoS) level at the same time. Unlike the conventional approach in population games, it considers both atomicity and non-anonymity. Simulation results show that the proposed population-games approach reduces grid consumption by up to about 12% compared to the traditional best-signal level association policy.U.S. Air Force Office of Scientific Research FA9550-17-1-0259Ministerio de Cultura y Deporte DPI2016-76493-C3-3-RMinisterio de Economía y Empresa DPI2017-86918-

Preferencias inciertas y modelo Spike en la valoración del patrimonio natural

El ordenamiento jurídico en España contempla que toda afección al patrimonio natural deberá ser compensada por la pérdida que supone la desaparición de un elemento de los espacios o especies protegidos. En este trabajo se desarrolla una herramienta que permite llevar a cabo la valoración del daño asociado a las afecciones al m edio natural de manera sencilla. En primer lugar y aplicando el método de valoración contingente a una muestra de 1000 habitantes, se ha estimado el valor de existencia que tiene el conjunto de las especies y espacios protegidos de la com unidad autónoma de Aragón. Esta primera estimación se ha revisado considerando la existencia de valores nulos y preferencias inciertas ante bienes poco conocidos .Una vez considerados estos dos efectos, la disposición a pagar media se reduce de manera considerable (más del 50% ) apoyando recomendaciones previas de dividir por dos las estimaciones provenientes de formatos dicotómicos en valoración contingente.Under the Spanish conservation law, compensation is envisaged for the damage associated with all actions that reduce the quantity or quality of protected areas and species. This paper provides a tool to evaluate the monetary equivalent of this damage. First, we conduct a contingent valuation exercise to estimate the existence value related to protected areas and species in Aragon. This first estimate is then reconsidered including in first place the possibility of zero bids and also the possibility of uncertain preferences for non familiar goods. Considering these two effects, mean values are reduced dramatically (more than halved) giving support to previous recom mendations of dividing by two contingent valuation estimates from dichotom ous choice question formats.Publishe

Cytoplasmic- and extracellular-proteome analysis of Diplodia seriata: a phytopathogenic fungus involved in grapevine decline

<p>Abstract</p> <p>Background</p> <p>The phytopathogenic fungus <it>Diplodia seriata</it>, whose genome remains unsequenced, produces severe infections in fruit trees (fruit blight) and grapevines. In this crop is recognized as one of the most prominent pathogens involved in grapevine trunk disease (or grapevine decline). This pathology can result in the death of adult plants and therefore it produces severe economical losses all around the world. To date no genes or proteins have been characterized in <it>D. seriata </it>that are involved in the pathogenicity process. In an effort to help identify potential gene products associated with pathogenicity and to gain a better understanding of the biology of <it>D. seriata</it>, we initiated a proteome-level study of the fungal mycelia and secretome.</p> <p>Results</p> <p>Intracellular and secreted proteins from <it>D. seriata </it>collected from liquid cultures were separated using two-dimensional gel electrophoresis. About 550 cytoplasmic proteins were reproducibly present in 3 independent extractions, being 53 identified by peptide mass fingerprinting and tandem mass spectrometry. The secretome analysis showed 75 secreted proteins reproducibly present in 3 biological replicates, being 16 identified. Several of the proteins had been previously identified as virulence factors in other fungal strains, although their contribution to pathogenicity in <it>D. seriata </it>remained to be analyzed. When <it>D. seriata </it>was grown in a medium supplemented with carboxymethylcellulose, 3 proteins were up-regulated and 30 down-regulated. Within the up-regulated proteins, two were identified as alcohol dehydrogenase and mitochondrial peroxyrredoxin-1, suggesting that they could play a significant role in the pathogenicity process. As for the 30 down-regulated proteins, 9 were identified being several of them involved in carbohydrate metabolism.</p> <p>Conclusions</p> <p>This study is the first report on proteomics on <it>D. seriata</it>. The proteomic data obtained will be important to understand the pathogenicity process. In fact, several of the identified proteins have been reported as pathogenicity factors in other phytopathogenic fungi. Moreover, this proteomic analysis supposes a useful basis for deepening into <it>D. seriata </it>knowledge and will contribute to the development of the molecular biology of this fungal strain as it has been demonstrated by cloning the gene <it>Prx</it>1 encoding mitochondrial peroxiredoxin-1 of <it>D. seriata </it>(the first gene to be cloned in this microorganism; data not shown).</p