LA FOTOGRAFÍA FIJA EN LOS ABRAZOS ROTOS: CATEGORÍAS Y USO EN LA CONSTRUCCIÓN DE LA MARCA ALMODÓVAR

En este artículo se estudia la fotografía fija de Los abrazos rotos de Pedro Almodóvar con el fin de poner de manifiesto los motivos iconográficos que aparecen en dichas imágenes y que irán conformando una serie de categorías o modelos. Estas fotografías participan en la construcción de la marca que representa el universo Almodóvar, más allá de los recursos ligados a este filme concreto

Subspace procrustes analysis

Postprint (author's final draft

A simulation method for fatigue-driven delamination in layered structures involving non-negligible fracture process zones and arbitrarily shaped crack fronts

Most of the existing methods for fatigue-driven delamination are limited to two-dimensional (2D) applications or their predictive capabilities have not been validated in three-dimensional (3D) problems. This work presents a new cohesive zone-based computational method for simulating fatigue-driven delamination in the analysis of 3D structures without crack migration. The method accurately predicts fatigue propagation of non-nelgigible fracture process zones with arbitrarily shaped delamination fronts. The model does not require any kind of fitting parameter since all the input parameters are obtained experimentally from coupon tests. The evaluation of the energy release rate is done using two new techniques recently developed by the authors (the growth driving direction and the mode-decomposed J-integral) leading to an accurate prediction of delamination propagation under mixed-mode and non-self-similar growing conditions. The new method has been implemented as a UEL for Abaqus and validated against an experimental benchmark case with varying crack growth rate and shape and extension of the fracture process zone.Comment: 37 pages, 14 figures, 7 table

CELL DEATH AND VIABILITY IN MARINE PHYTOPLANKTON

CITONATAplicación de ensayos in vitro para la detección precoz de ficotoxinas en muestras de poblaciones fitoplanctónicas multiespecífica

Subspace procrustes analysis

Procrustes Analysis (PA) has been a popular technique to align and build 2-D statistical models of shapes. Given a set of 2-D shapes PA is applied to remove rigid transformations. Then, a non-rigid 2-D model is computed by modeling (e.g., PCA) the residual. Although PA has been widely used, it has several limitations for modeling 2-D shapes: occluded landmarks and missing data can result in local minima solutions, and there is no guarantee that the 2-D shapes provide a uniform sampling of the 3-D space of rotations for the object. To address previous issues, this paper proposes Subspace PA (SPA). Given several instances of a 3-D object, SPA computes the mean and a 2-D subspace that can simultaneously model all rigid and non-rigid deformations of the 3-D object. We propose a discrete (DSPA) and continuous (CSPA) formulation for SPA, assuming that 3-D samples of an object are provided. DSPA extends the traditional PA, and produces unbiased 2-D models by uniformly sampling different views of the 3-D object. CSPA provides a continuous approach to uniformly sample the space of 3-D rotations, being more effcient in space and time. Experiments using SPA to learn 2-D models of bodies from motion capture data illustrate the benefits of our approach.Preprin

Subspace Procrustes Analysis

Procrustes Analysis (PA) has been a popular technique to align and build 2-D statistical models of shapes. Given a set of 2-D shapes PA is applied to remove rigid transformations. Then, a non-rigid 2-D model is computed by modeling (e.g., PCA) the residual. Although PA has been widely used, it has several limitations for modeling 2-D shapes: occluded landmarks and missing data can result in local minima solutions, and there is no guarantee that the 2-D shapes provide a uniform sampling of the 3-D space of rotations for the object. To address previous issues, this paper proposes Subspace PA (SPA). Given several instances of a 3-D object, SPA computes the mean and a 2-D subspace that can simultaneously model all rigid and non-rigid deformations of the 3-D object. We propose a discrete (DSPA) and continuous (CSPA) formulation for SPA, assuming that 3-D samples of an object are provided. DSPA extends the traditional PA, and produces unbiased 2-D models by uniformly sampling different views of the 3-D object. CSPA provides a continuous approach to uniformly sample the space of 3-D rotations, being more efficient in space and time. Experiments using SPA to learn 2-D models of bodies from motion capture data illustrate the benefits of our approach

A fully-automatic caudate nucleus segmentation of brain MRI: Application in volumetric analysis of pediatric attention-deficit/hyperactivity disorder

Background Accurate automatic segmentation of the caudate nucleus in magnetic resonance images (MRI) of the brain is of great interest in the analysis of developmental disorders. Segmentation methods based on a single atlas or on multiple atlases have been shown to suitably localize caudate structure. However, the atlas prior information may not represent the structure of interest correctly. It may therefore be useful to introduce a more flexible technique for accurate segmentations. Method We present Cau-dateCut: a new fully-automatic method of segmenting the caudate nucleus in MRI. CaudateCut combines an atlas-based segmentation strategy with the Graph Cut energy-minimization framework. We adapt the Graph Cut model to make it suitable for segmenting small, low-contrast structures, such as the caudate nucleus, by defining new energy function data and boundary potentials. In particular, we exploit information concerning the intensity and geometry, and we add supervised energies based on contextual brain structures. Furthermore, we reinforce boundary detection using a new multi-scale edgeness measure. Results We apply the novel CaudateCut method to the segmentation of the caudate nucleus to a new set of 39 pediatric attention-deficit/hyperactivity disorder (ADHD) patients and 40 control children, as well as to a public database of 18 subjects. We evaluate the quality of the segmentation using several volumetric and voxel by voxel measures. Our results show improved performance in terms of segmentation compared to state-of-the-art approaches, obtaining a mean overlap of 80.75%. Moreover, we present a quantitative volumetric analysis of caudate abnormalities in pediatric ADHD, the results of which show strong correlation with expert manual analysis. Conclusion CaudateCut generates segmentation results that are comparable to gold-standard segmentations and which are reliable in the analysis of differentiating neuroanatomical abnormalities between healthy controls and pediatric ADHD

Análisis morfológico, molecular y contenido de toxinas de Dinophysis cf ovum, registrado en las Rías Baixas en Mayo de 2005

[ESP] Dinophysis acuminata Claparéde et Lachmann es el principal organismo portador de toxinas DSP, causantes de prolongados cierres de extracción de bivalvos, en la costa suratlántica europea (Francia, Irlanda, España y Portugal). No obstante, bajo esta denominación taxonómica se incluyen una serie de morfoespecies de Dinophysis cuya característica común es poseer sus grandes placas hipotecales con un contorno que varía entre ovoide, elipsoidal y sub-esférico. A finales de Mayo de 2006 se registró una repentina floración de un Dinophysis sp. de contorno ovalado muy regular, tecas muy delicadas, y talla pequeña (L: 31-42 µm; W: 22.5-32µm), fácilmente distinguible del D. acuminata típico de las Rías Baixas gallegas. Este Dinophysis cf ovum, con morfología próxima a D. ovum Schüt y a D. sphaerica Stein, es muy similar a los D. cf acuminata descritos en Bahía de Thermaikos (Grecia) y en las costas de Huelva. Análisis por cromatografía líquida acoplada a espectrómetro de masas (LC/MS) de arrastres ricos en esta especie revelaron un contenido moderado (< 10 pg cel-1) de ácido okadaico (AO). El análisis comparado de diferentes regiones del operón del rRNA obtenido a partir de células de D. cf ovum, aisladas in vivo por micromanipulación, presentan diferencias con respecto a las obtenidas para el D. acuminata típico de la región, lo que sugirie una diferente adscripción filogenética