Information theory tools for viewpoint selection, mesh saliency and geometry simplification

In this chapter we review the use of an information channel as a unified framework for viewpoint selection, mesh saliency and geometry simplification. Taking the viewpoint distribution as input and object mesh polygons as output vectors, the channel is given by the projected areas of the polygons over the different viewpoints. From this channel, viewpoint entropy and viewpoint mutual information can be defined in a natural way. Reversing this channel, polygonal mutual information is obtained, which is interpreted as an ambient occlusion-like quantity, and from the variation of this polygonal mutual information mesh saliency is defined. Viewpoint entropy, viewpoint Kullback-Leibler distance, and viewpoint mutual information are then applied to mesh simplification, and shown to compare well with a classical geometrical simplification method

Exploring lifted planning encodings in Essence Prime

This work is supported by UK EPSRC EP/P015638/1 and EP/V027182/1, by the MICINN/FEDER, UE (RTI2018-095609-B-I00), by the French Agence Nationale de la Recherche, reference ANR-19-CHIA-0013-01, and by Archimedes institute, Aix-Marseille University.State-space planning is the de-facto search method of the automated planning community. Planning problems are typically expressed in the Planning Domain Definition Language (PDDL), where action and variable templates describe the sets of actions and variables that occur in the problem. Typically, a planner begins by generating the full set of instantiations of these templates, which in turn are used to derive useful heuristics that guide the search. Thanks to this success, there has been limited research in other directions. We explore a different approach, keeping the compact representation by directly reformulating the problem in PDDL into ESSENCE PRIME, a Constraint Programming language with support for distinct solving technologies including SAT and SMT. In particular, we explore two different encodings from PDDL to ESSENCE PRIME, how they represent action parameters, and their performance. The encodings are able to maintain the compactness of the PDDL representation, and while they differ slightly, they perform quite differently on various instances from the International Planning Competition.Publisher PD

DISTRIBUCIÓN ESPACIAL DE LA ACTIVIDAD ECONÓMICA EN LA UNION EUROPEA

The focus of this paper is to analyze the evolution of spatial distribution of aggregate economic activity in the European Union during the period 1980-2002. The proposed methodology has as basis to incorporate, systematically, both the distance and the spatial interdependence among the analyzed events. To do this, we use two different distance-based approaches. The first approach is just a planar index, the Index of Cluster Size, but the second seeks to fit an auto-Poisson spatial distribution function that allows us to obtain a probability model and to characterize the underlying structure of the spatial distribution of the economic activity in Europe. We use data of GDP for EU regions, at the NUTS2 and NUTS3 level, for the period 1980-2002. The results obtained in both work lines are basically the same ones, indicating that during the analyzed period, the concentration of the economic activity has been increased for the group of European considered regions, but with noticeable differences among the different countries. El objetivo de este trabajo es analizar la distribución espacial de la actividad económica en Europa y su evolución temporal entre los años 1980 y 2002. La metodología propuesta tiene como fundamento incorporar de forma sistemática la distancia y la interdependencia espacial entre los sucesos objeto de análisis. En concreto se han utilizado dos procedimientos, el primero consiste en un índice plano de concentración espacial muy simple, el ICS (Index of Cluster Size), el segundo se obtiene como resultado de la parametrización y estimación de una función de distribución espacial auto-Poisson, que nos permite obtener un modelo de probabilidad, y caracterizar la estructura latente de la distribución espacial de la actividad económica en Europa. Los resultados obtenidos en ambas líneas de trabajo son básicamente los mismos, indicando que durante el periodo considerado se ha incrementado la concentración de la actividad económica para el conjunto de regiones europeas consideradas, pero con diferencias notables entre los distintos países.Distribución espacial del PIB, economía espacial, estadística espacial, localización actividad económica, auto-Poisson. Auto-Poisson, economic activity localization, EU, GDP spatial distribution, spatial economics, spatial statistics.

Implementación de la gestión de proyectos en los sistemas Erp : SAP y Primavera Project Planner

Los sistemas ERP (Enterprise Resource Planning) son sistemas de gestión empresariales compuestos por diferentes módulos que comparten una base de datos centralizada. Este proyecto se plantea como objetivo general establecer las bases para la implantación de dicho sistema de gestión mediante integración de un software de la planificación y programación de obras, el programa Primavera Project Planner. Los objetivos específicos del proyecto son: analizar el funcionamiento y las características de dicho programa informático con la finalidad de estudiar la integración del sistema ERP SAP-Primavera Project Planner y su implementación en un caso real.Valero Mateu, M. (2012). Implementación de la gestión de proyectos en los sistemas Erp : SAP y Primavera Project Planner. http://hdl.handle.net/10251/21831.Archivo delegad

Cold plasma-treated ringer’s saline: a weapon to target osteosarcoma

Osteosarcoma (OS) is the main primary bone cancer, presenting poor prognosis and difficult treatment. An innovative therapy may be found in cold plasmas, which show anti-cancer effects related to the generation of reactive oxygen and nitrogen species in liquids. In vitro models are based on the effects of plasma-treated culture media on cell cultures. However, effects of plasma-activated saline solutions with clinical application have not yet been explored in OS. The aim of this study is to obtain mechanistic insights on the action of plasma-activated Ringer’s saline (PAR) for OS therapy in cell and organotypic cultures. To that aim, cold atmospheric plasma jets were used to obtain PAR, which produced cytotoxic e ects in human OS cells (SaOS-2, MG-63, and U2-OS), related to the increasing concentration of reactive oxygen and nitrogen species generated. Proof of selectivity was found in the sustained viability of hBM-MSCs with the same treatments. Organotypic cultures of murine OS confirmed the time-dependent cytotoxicity observed in 2D. Histological analysis showed a decrease in proliferating cells (lower Ki-67 expression). It is shown that the selectivity of PAR is highly dependent on the concentrations of reactive species, being the differential intracellular reactive oxygen species increase and DNA damage between OS cells and hBM-MSCs key mediators for cell apoptosis.Peer ReviewedPostprint (published version