Multi-Resolution Texture Coding for Multi-Resolution 3D Meshes

We present an innovative system to encode and transmit textured multi-resolution 3D meshes in a progressive way, with no need to send several texture images, one for each mesh LOD (Level Of Detail). All texture LODs are created from the finest one (associated to the finest mesh), but can be re- constructed progressively from the coarsest thanks to refinement images calculated in the encoding process, and transmitted only if needed. This allows us to adjust the LOD/quality of both 3D mesh and texture according to the rendering power of the device that will display them, and to the network capacity. Additionally, we achieve big savings in data transmission by avoiding altogether texture coordinates, which are generated automatically thanks to an unwrapping system agreed upon by both encoder and decoder

ITEM: Inter-Texture Error Measurement for 3D Meshes

We introduce a simple and innovative method to compare any two texture maps, regardless of their sizes, aspect ratios, or even masks, as long as they are both meant to be mapped onto the same 3D mesh. Our system is based on a zero-distortion 3D mesh unwrapping technique which compares two new adapted texture atlases with the same mask but different texel colors, and whose every texel covers the same area in 3D. Once these adapted atlases are created, we measure their difference with ITEM-RMSE, a slightly modified version of the standard RMSE defined for images. ITEM-RMSE is more meaningful and reliable than RMSE because it only takes into account the texels inside the mask, since they are the only ones that will actually be used during rendering. Our method is not only very useful to compare the space efficiency of different texture atlas generation algorithms, but also to quantify texture loss in compression schemes for multi-resolution textured 3D meshes

El principio de igualdad y la prohibición de discriminación en la constitución española y en normas laborales con referencia particular al sexo como razón de distinción

The present work intends to document the reader respect to the content of the principles of equality and of recognized prohibition of discrimination in the Spanish Constitution, its applicability in the labor scope depending on which the principles are (drittwirkung), the norms that make them, the doctrine developed by the Constitutional Court respect to them and the main expressions of the discrimination because of sex as well as its exceptionsEl presente trabajo tiene por objeto documentar al lector respecto del contenido de los principios de igualdad y de prohibición de discriminación reconocidos en la Constitución española, su aplicabilidad en el ámbito laboral dependiendo de cuál de los principios se trate (la drittwirkung), las normas que los realizan, la doctrina desarrollada por el Tribunal Constitucional respecto de ellos y las principales expresiones de la discriminación por razón de sexo en esta materia así como las excepciones a la misma

Trophic ecology of the Endangered Darwin's frog inferred by stable isotopes

Indexación: Scopus.Acknowledgements. We thank Dr. Mauricio González-Chang for his contribution to invertebrate identification and Sally Wren for the revision of an earlier version of the manuscript. We are also extremely grateful to Tomás Elgueta Alvarez for providing Video S1. B.E.M.B. has a fellowship awarded by Universidad Andres Bello. This research project was approved by the Bioethics Committee at the Universi-dad Andres Bello, Chile (N°13/2015), and by permits N°5666/2013, N°230/2015, and N°212/2016 of the Chilean Agriculture and Livestock Service, and N°026/2013 and N°11/2015 IX of the Chilean National Forestry Corporation. This study was funded by the Dirección General de Investi-gación y Doctorados, Universidad Andres Bello, through grant N°DI-53-11/R and national funds through FONDE CYT N°11140902 and 1181758 (to C.S.A.).Darwin's frogs Rhinoderma spp. are the only known mouth-brooding frogs on Earth. The southern Darwin's frog, R. darwinii, is found in the temperate forests of southern South America, is listed as Endangered and could be the only extant representative of this genus. Based on stomach contents, invertebrate prey availability and stable isotope analysis, we determined for the first time trophic ecological parameters for this species. Our results showed that R. darwinii is a generalist sit-and-wait predator and a secondary consumer, with a trophic position of 2.9. Carbon and nitrogen isotope composition indicated that herbivore invertebrates are their main prey, detected in 68.1% of their assimilated food. The most consumed prey included mosquitoes, flies, crickets, grasshoppers and ants. Detritivore and carnivore invertebrates were also ingested, but in lower proportions. Our results contribute to a better understanding of the feeding habits of this fully terrestrial amphibian and provide the first insight into their role linking low forest trophic positions with intermediate predators. We provide valuable biological information for in situ and ex situ conservation which can be used when developing habitat protection, reintroduction and captive breeding programmes. As revealed here, stable isotope analysis is a valuable tool to study the trophic ecology of highly endangered and cryptic species. © The authors 2018.https://www.int-res.com/abstracts/esr/v36/p269-278

Box 4. Impact on inflation of the mechanism to cap gas prices on the Iberian market

Artículo de revist

Propuesta de un plan de contingencia de respaldos de información del software y la información de las organizaciones.

A medida que la tecnología evoluciona y con ella, la importancia de los sistemas de información de las organizaciones, la seguridad del entorno informático se ha convertido en una de las grandes preocupaciones de los responsables de esta actividad. Esta preocupación debe ser adecuadamente comprendida y compartida por los directivos, los cuales deben considerar sus inversiones en medidas de Seguridad Informática, como un gasto necesario que contribuya a mantener la operatividad y rentabilidad de la organización. Esto implica que los responsables de las áreas informáticas deban explicar con la suficiente claridad las principales consecuencias de una Política de Seguridad insuficiente o incluso inexistente

Quantum tomography via equidistant states

We study the possibility of performing quantum state tomography via equidistant states. This class of states allows us to propose a non-symmetric informationally complete POVM based tomographic scheme. The scheme is defined for odd dimensions and involves an inversion which can be analytically carried out by Fourier transform

Solvation in binary mixtures of dipolar hard sphere solvents: Theory and simulations

The structure of mixtures of dipolar hard sphere fluids with components of equal size but different dipole moments around a single ion is studied. The solvation energy and the polarization around the ion is obtained in the framework of the mean spherical approximation (MSA). Our theoretical results and the results of other workers are compared with simulation data obtained from Monte Carlo simulations. An interpretation of the meaning of preferential solvation is given in terms of the contrasting behaviors of partial polarization in the bulk and near the ion.Dirección General de Enseñanza Superior de España PB98-0423 y PB98-1120Junta de Andalucí

Reorganization energies for charge transfer reactions in binary mixtures of dipolar hard sphere solvents: A Monte Carlo study

We study the behavior of the reorganization energy for simple charge transfer reactions in mixtures of dipolar hard sphere fluids by Monte Carlo simulation. The static dielectric constants of the solvents are also obtained from the simulation. They are used as input in the reorganization energy expressions provided by the Marcus theory and the mean spherical approximation. Thus, a comparison between the values obtained from the theoretical expressions and our simulation results is possible. The dependence of the reorganization energy with the mixture composition and the influence of preferential solvation effects is also discussed.Dirección General de Enseñanza Superior de España PB-95-0535 y PB95-0536Junta de Andalucí

Experimental scheme for unambiguous discrimination of linearly independent symmetric states

We propose an optimal discrimination scheme for a case of four linearly independent nonorthogonal symmetric quantum states, based on linear optics only. The probability of discrimination is in agreement with the optimal probability for unambiguous discrimination among N symmetric states [Phys. Lett. A \textbf{250}, 223 (1998)]. The experimental setup can be extended for the case of discrimination among $2^M$ nonorthogonal symmetric quantum states